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50 Interesting 6th Grade Science Fair Projects and Classroom Activities

Award-winning ideas and science demos on every topic.

Collage of 6th grade science fair projects, including a paper plane launcher and compost cups

Sixth grade science covers a wide variety of topics and varies depending on the curriculum. We’ve rounded up the best 6th grade science fair projects to inspire kids, as well as classroom science demos and activities that will grab their attention.

To make it easier to find what you’re looking for, we’ve rated all the projects and activities by difficulty and the materials needed:

Difficulty:

  • Easy: Low or no-prep experiments you can do pretty much anytime
  • Medium: These take a little more setup or a longer time to complete
  • Advanced: Experiments like these take a fairly big commitment of time or effort
  • Basic: Simple items you probably already have around the house
  • Medium: Items that you might not already have but are easy to get your hands on
  • Advanced: These require specialized or more expensive supplies to complete

Biology and Earth Science 6th Grade Science Fair Projects

Chemistry 6th grade science fair projects, physics and engineering 6th grade science fair projects, 6th grade science classroom demos and hands-on activities.

For students interested in anatomy, animals, geology, ecology, and more, these are the science fair projects they need!

Find the fastest way to ripen fruit

Difficulty: Medium / Materials: Medium

Need to ripen those bananas or peaches in a hurry? Do some research and then experiment to find the fastest way to safely ripen fruit without sacrificing flavor.

Clean up an oil spill

Sixth grade science student using a spoon to try to catch a puddle of oil floating on water

Learn why an oil spill is so devastating for wildlife and the ecosystem with this hands-on activity. Kids experiment to find the best way to clean up oil floating on water and rescue the animals affected by the spill.

Learn more: Oil Spill Cleanup at Kitchen Counter Chronicle

Explore new ways to filter water

Basic water-filtration systems are pretty simple, but they make terrific science fair projects. Experiment with different setups, and find a way to make safe drinking water for people who need it.

Shake it up with earthquake science

Two foam plates with structures built from wood craft sticks and putty on top

Difficulty: Easy / Materials: Basic

Build simple model structures, then experiment to see how the actions of earthquakes affect them. Do research into what engineers and architects build in earthquake zones, then perform an experiment to see if you can improve on their findings.

Learn more: Earthquake Science at Love To Know

Grow a better garden using hydroponics

Hydroponics is the hot new gardening trend, but is it really a better way to garden? Find out with a DIY hydroponics gardening setup, comparing the results with traditional container gardening.

Find out if chewing gum really helps improve test scores

One of the more popular 6th grade science fair projects answers the question: Does chewing gum affect test scores? You’ll be surprised by the results!

Create top-notch compost in a cup

Two plastic cups filled with compost and covered in plastic wrap

This is an easy science activity, and you can turn it into a science fair project by experimenting with different mixtures, layering, and conditions for your compost cups.

Learn more: Compost Cups at The Happy Housewife

Learn the best way to repel ants

Do you really need to use poisons to keep ants out of your home? Explore other possible solutions in this science project idea.

Simulate a tsunami and find ways to protect people

Build a model to simulate a tsunami, then come up with potential ways to minimize the damage future waves may cause.

Design a squirrel-proof bird feeder

Squirrels can be real pests at backyard bird feeders, and people are always trying to come up with new solutions to the issue. Can you be the one who finally solves this pesky problem?

Students who love to mix up chemicals and explore the results will enjoy these 6th grade chemistry science fair ideas.

Compare baking powder and baking soda

Baking powder and baking soda have similar names, but do they behave the same when used in a baking recipe? Bake up a few cakes and find out!

Devise a formula for creating the biggest soap bubbles

Soap bubble formulas vary, and some allow you to make bigger bubbles than others. What does it take to make the biggest bubble of them all?

Learn if tea and cola damage teeth

Three eggs next to containers of coffee, tea, and cola, with a permanent marker

Difficulty: Easy / Materials: Medium

Use eggshells to explore how various beverages can stain teeth in this classic 6th grade science fair project. (It also teaches important lessons about dental hygiene!)

Learn more: Teeth and Eggs at Education.com

Look for iron in your breakfast cereal

The human body needs iron to be healthy, and many breakfast cereal boxes boast that they contain it. Conduct a 6th grade science fair project to find out if cereals really contain all the iron they say they do.

Find the best way to clean up old coins

Pennies in small cups of liquid labeled coca cola, vinegar + salt, apple juice, water, catsup, and vinegar. Text reads Cleaning Coins Science Experiment. Step by step procedure and explanation.

Use common household items to make old oxidized coins clean and shiny again in this simple chemistry experiment. Form a hypothesis about which method will work best, then do some research to explain the results.

Learn more: Cleaning Coins Experiment at Gally Kids

Explore the effects of various sugars on yeast

Yeast needs sugar to grow, but does the type of sugar matter? And can you use sugar substitutes instead? This is a sweet way to find out!

Grow the biggest carbon sugar snake

Large carbon ash snake growing out of a pan of sand

Tinker with the formula to create the biggest carbon sugar snake possible! This is an engaging project that will wow other students too.

Learn more: Carbon Sugar Snake at KiwiCo

Determine whether soda has more sugar than juice

Which do you think has more sugar, a glass of Pepsi or one of orange juice? Boil away the water to find out in this 6th grade chemistry experiment.

Explore the properties of plastic made from milk

Making milk from plastic is actually pretty simple. Turn it into a science fair project by learning more about its strength, durability, and flexibility, and proposing a practical use for it.

Determine which type of juice has the most vitamin C

Vitamin C might not immediately cure your cold, but it definitely has health benefits. Does orange juice really have the most vitamin C? Conduct an experiment using an iodine titration method to learn the answer.

Calling all tinkerers! Build, create, and engineer a science fair project using physics principals.

Build a powerful paper-plane launcher

Sixth grade science student using a homemade launcher to launch a paper airplane

Here’s a cool 6th grade science fair project. Design and build a paper-airplane launcher that can fly a plane farther than anyone else’s.

Learn more: Paper Plane Launcher at Frugal Fun for Boys and Girls

Figure out the fastest way to cool a soda

Adding ice to a glass of soda cools it off, but it also waters it down. See if you can find a fast way to cool down soda while it’s still in the can or bottle instead.

Launch a bottle rocket higher or more accurately

A basic water-powered rocket isn’t that hard to assemble, but you can turn it into a bona fide 6th grade science fair project by playing around with the design. Figure out how to launch it higher, or change the trajectory to hit a certain target.

Identify the best insulating material

Insulating an item can prevent it from losing heat, like an insulated beverage bottle. What materials are the most effective insulators? How can you find out?

Drop parachutes to test air resistance

Card with text Which is the best parachute? Plastic, paper, cloth. Surrounded by pieces of fabric, plastic, and string.

Use the scientific method to test different types of material and see which makes the most effective parachute. This is an easy project that’s perfect for kids interested in design and engineering.

Learn more: Parachutes at Education.com

Discover which produce best powers a clock

Here’s one of those classic science fair projects that you can really customize to make your own. Try testing out a variety of fruits and veggies, or playing around with connecting several types of produce to see what happens. This inexpensive kit has all the supplies you need.

Engineer the strongest craft stick bridge

Difficulty: Medium / Materials: Basic

This is a classic science activity for the classroom, but it works well for 6th grade science fair projects too. Form a hypothesis about the strongest type of bridge design, then build your own models to test it out.

Assemble the best simple motor

A simple motor built from basic materials

Looking for an idea that’s impressive but not too complicated? Build your own simple motor! You only need a few special supplies, including insulated copper wire and neodymium magnets . Turn it into a true 6th grade science fair project by altering the variables to see if you can increase the speed, reduce the noise, or make other improvements.

Learn more: DIY Motor at Home Science Tools

Learn if room temperature affects candle burn rate

This is a simple experiment to conduct, and it’s inexpensive too. Burn birthday candles in a variety of temperatures to see if they burn faster in higher temps.

Determine how much money energy vampires are wasting in your home

So-called “energy vampires” use up energy even when they’re not in active use. And energy costs money. Determine how much energy is being wasted by energy vampires in your home, and figure out how much money you can save on an annual electric bill by getting rid of them.

Engage students with a live demonstration showing the concepts they’re studying. Even better, give them a chance to get hands-on and do the science themselves!

Assemble motorized tiny dancers

AA batteries with tiny wire figures twisted around them, with tutus added to look like ballet dancers

Build a homopolar motor to make little spinning wire dancers. It takes a little practice to get it right, but it’s a really fun way to learn about motors and energy.

Learn more: Tiny Dancers at Babble Dabble Do

Amplify your smartphone with basic supplies

Smartphone amplifier made from paper cups and a toilet paper tube

No Bluetooth speaker? No problem! Build your own from paper cups and a toilet paper tube. This is a 6th grade STEM challenge that’s sure to amaze kids.

Learn more: Cell Phone Speaker at The Mad House

Wear a gene bracelet

Bags of pony beads labeled with various traits like hair color and eye color

This is a neat way to talk about our genes. Have each student add pony beads to their bracelet to represent different traits. Then they can compare their differences and similarities. It’s likely that no two students will have the same bracelets!

Learn more: DNA Gene Bracelet at Pragmatic Mom

Make naked eggs

Sixth grade science student holding a raw egg without a shell

Students dissolve the calcium carbonate eggshell in vinegar and discover the membranes beneath that hold the egg together. It’s a unique and intriguing way to learn about acid-base reactions.

Learn more: Naked Egg at Making Memories With Your Kids

Experiment with naked eggs

Raw egg without a shell that has been dehydrated sitting next to a regular egg

Now, submerge those naked eggs in corn syrup and water to learn about osmosis. The eggs shrink or grow depending on the liquid they’re placed in. So cool!

Learn more: Naked Egg Experiments at Exploratorium

Send water traveling down a string

String running down into a glass partially filled with blue water

Explore the properties of cohesion and adhesion with this simple experiment using only water and cotton string. Expand the learning by trying the same experiment with different materials and liquids.

Learn more: Traveling Water at Rookie Parenting

Launch a two-stage rocket

The rockets used for space flight generally have more than one stage to give them the extra boost they need. This experiment uses balloons to model a two-stage rocket launch, teaching kids about the laws of motion.

Change the color of a liquid in an instant

Want to see your kids gasp in amazement? Perform the iodine clock reaction. You only need a few drugstore chemicals to change the solution from clear to dark blue faster than students can blink.

Levitate a Ping-Pong ball

Sixth grade student holding the cut off top of a plastic bottle with a straw attached. A ping pong ball is floating over the bottle top.

Kids will get a kick out of this experiment, which is really all about Bernoulli’s principle. You only need plastic bottles, bendy straws, and Ping-Pong balls to make the science magic happen.

Learn more: Bernoulli Ping-Pong Ball at Buggy and Buddy

Use a fidget spinner to understand inertia

Series of photos of a child holding a fidget spinner in action. Text reads 3 lights = highest inertia, decreasing inertia, 0 lights = lowest inertia

Learning about the laws of motion? This experiment uses a fidget spinner with three lights to show how mass and torque affect inertia.

Learn more: Fidget Spinner Inertia at Homeschool Momgineer

Build a heart pump model

Simple heart pump model made from plastic bottles, drinking straws, and modeling clay

Students gain a deeper understanding of the cardiovascular system when they construct a working model of a heart ventricle.

Learn more: Heart Pump Model at Tina’s Dynamic Homeschool Plus

Construct a pair of model lungs

Sixth grade student holding model lungs and diaphragm made from a plastic bottle, duct tape, and balloons

Build model lungs using a plastic water bottle and some balloons to learn more about the respiratory system. You can modify the experiment to demonstrate the effects of smoking too.

Learn more: Lungs Model at Surviving a Teacher’s Salary

Dissect an owl pellet

Sixth grade science student wear gloves, holding an owl pellet over a red tray

Dig into an owl’s regurgitated meals (it’s not as gross as it sounds!) to discover what their diet consists of. Owl pellets are readily available online, and kids will be intrigued by what they find.

Learn more: Owl Pellets at Gift of Curiosity

Study sound waves with a spoon

Sixth grade science student holding yarn strings to her ears and looking surprised

With just yarn and a metal spoon, learn how vibrations create sound, and explore the role of conductors.

Learn more: Spoon Sound Waves at KC Edventures With Kids

Make sparks with steel wool

Steel wool sitting in an aluminum tray. The steel wool appears to be on fire.

All you need is steel wool and a 9-volt battery to perform this science demo that’s bound to make their eyes light up! Kids learn about chain reactions, chemical changes, and more.

Learn more: Steel Wool Reaction at The Homeschool Scientist

Create a colorful cell model

Cell model made from a spiky pink hand sanitizer holder, labeled Our Bacterium Prokaryotic Cell

There are lots of cell model projects out there, but this might be one of the cutest ones we’ve seen! And it’s easier to assemble than you might think.

Learn more: Cell Model at Angelic Scalliwags

Extract DNA from a strawberry

It’s surprisingly easy to pull a strand of DNA from this sweet fruit. Teach your kids about genetics and DNA with this 6th grade science project that uses only basic household supplies.

Design a biodome

Model biodome made from plastic bottles and containers filled soil with and plants

There’s so much to learn in this 6th grade science project. Kids build a scale-model biodome to learn more about different environments and ecosystems, decomposition, the food web, and more.

Learn more: Biodome Project at Teach Engineering

Pull an egg into a bottle

Glass bottle with bowl holding three eggs, small glass with matches sitting on a box of matches, and a yellow plastic straw, against a blue background

This is another classic science demo that never fails to delight. Use the power of air pressure to suck a hard-boiled egg into a jar—no hands required.

Learn more: Egg in a Bottle at Left Brain Craft Brain

Make a pH indicator from a vegetable

Making a PH indicator from cabbage for 6th grade scientists.

Who knew such a simple material could be used to determine a substance’s acidity or alkalinity? Your students can explore acids and bases with this simple experiment.

Learn more: Red Cabbage Indicator at Compound Interest

Need supplies for your 6th grade science fair projects and activities? Check out these 24 Science Kits for Middle and High School That Make Hands-On Lessons Easy .

Plus, get all the latest teaching tips and tricks straight to your inbox by signing up for our newsletters .

This roundup includes interesting 6th grade science fair projects, as well as classroom demos and hands-on science activities to try.

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6th Grade Science Fair Projects

6th grade science fair projects should be fun and educational.

6th grade science fair projects can be fun as well as educational. The key to finding a good project idea is to pick one that can be completed in time, uses materials you can actually find, and incorporates the scientific method . You can turn any science project into a science fair project by finding one factor you can change (the independent variable ) and measuring its effect on another factor (the dependent variable ). Either predict what you expect to happen or form a hypothesis , record the data, determine whether it upholds the prediction, and report your findings.

Here is a collection of 6th grade science fair project ideas. The projects include chemistry, biology, physics, geology, weather, environmental science, and engineering.

Grow Geodes in Egg Shells

Geodes form when minerals crystallize from water trickling into holes within rocks. While natural geodes take millions of years to form, you can make your own geode in a few hours or days. Use an eggshell as your “rock” and crystallize salt, sugar, borax, or Epsom salts.

Make It an Experiment: Turn this cool project into a science fair experiment by predicting how temperature affects crystal formation. You can explore the effect of rate of cooling on crystallization by insulating the growing geode with a hot water bath, leaving it at room temperature, and refrigerating it.

Build a Structure to Withstand an Earthquake

Explore the principle engineers use to construct buildings to withstand seismic events like earthquakes. Use styrofoam plates as the “ground” and make buildings using craft sticks. Join the craft sticks to each other using mini-marshmallows. Use a sharp pencil to poke holes in the bottom of the plate to insert craft stick supports. These will be the building’s foundation. When you have finished construction, shake the plate from side to side to simulate an earthquake.

Make It an Experiment: What type of structure survives the simulate earthquake the best? Is it rigid or flexible. You can perform a similar simulation by constructing a structure meant to withstand a hurricane. Use a fan as the wind and examine how the type of wall affects the building’s stability.

Control the Rate of a Color Change Reaction

Many color change chemical reaction are clock reactions. What this means is that if you mix the same amounts of chemicals under the same conditions, the color change occurs after the same time interval (like clockwork). The blue bottle reaction and vanishing valentine are excellent clock reactions for 6th grade science projects.

Make It an Experiment: Predict whether changing the concentration of the starting chemicals or the temperature of the liquids will increase or decrease the speed of the color change. Perform the experiment, record the results, and see if you can explain them.

Turn Milk Into Plastic

Many common plastics come from petroleum, but you can make a plastic from milk. Basically, all you do is curdle the milk . Heat 1/2 cup of milk or heavy cream over low to medium heat until it simmers. Stir in lemon juice or vinegar until the mixture starts to thicken. Remove the pot from heat. When the liquid has cooled, rinse the curds with water. These curds are a natural casein polymer. You’ve made homemade plastic!

Make It a Science Experiment: Your experiment might explore the properties of this plastic, including how far it will stretch, how much weight it can hold, and whether it can be used as a modeling compound. Another option is to compare the amount of plastic you get from cow’s milk compared to goat milk or sheep milk. Do you get the same amount of plastic from cream as from milk?

Explore the Pigments in Leaves

Most leaves look green from chlorophyll, but actually contain several different pigments. In the autumn, plants make less chlorophyll, so you can see the other colors. You can use paper chromatography to see pigments in leaves. To do this, grind leaves to break open their cells (a blender works well), place them in a small jar, add just enough alcohol to cover the leaves, and insert a long strip of coffee filter paper into the jar. You want one end of the paper strip in the leaf mixture and the other end extending up and outside of the jar. As liquid moves up the paper, it pulls pigment molecules along. Smaller molecules move faster, while larger molecules move slower. Over time, this separates the colors.

Make It an Experiment: See if you can identify which pigments the leaves contain based on their colors. Gather leaves from a single plant from multiple seasons. Compare the pigments from spring, summer, and autumn. Can you tell the season by the pigments present in the leaves?

See the Iron in Breakfast Cereal

Use a magnet to separate the iron from breakfast cereal so you can actually see it. To do this, pour one cup of crushed cereal into a zipper-lock bag and fill the bag half full of warm water. Shake the bag to mix the contents and allow at least 20 minutes for the flakes to dissolve. Place a strong magnet against the side of the bag and slosh the contents around so the magnet can capture the iron. Finally, keep the magnet up against the side of the bag but tilt the bag so you can see the iron. It will appear as tiny black specks.

Make It an Experiment: Compare the iron in different cereals. Do all cereals contain about the same amount of iron? Does it look the same in every product?

Use Eggs to See Which Drinks Stain Teeth

Tooth enamel is the mineral hydroxyapatite (hydrated calcium phosphate), while egg shell is calcium carbonate. Egg shell is more porous than tooth enamel, so it stains more quickly. Soak eggs in tea, coffee, soda, and other liquids to determine which ones stain teeth. Common drinks also contain acids in addition to pigments, so some drinks dissolve egg shell (and teeth). Can you identify them?

Make It an Experiment: After staining the eggs, predict which methods work to remove the stains. Test these methods and see if you can discover how they work.

Use Household Chemicals to Clean Old Coins

Learn about oxidation, which includes tarnish, patina, and rust. Explore the cleaning power of common household chemicals. Soak discolored coins in soap, laundry detergent, lemon juice, salt water, soda, ketchup, vinegar, salsa, or any other products you like. After soaking, remove the coins and rinse them to see which ones clean the coins the best.

Make It an Experiment: Part of making this project an experiment is predicting which chemicals make the best cleaners. Also, you’ll have to determine the best amount of time to soak the coins. You can compare how well these chemicals work on different types of coins (like pennies, quarters, and nickels). Do you think the metal composition of the coin affects how well the cleaners work?

Make a Graphite Circuit

Graphite is a form of carbon that conducts electricity. You can draw a line of graphite using a pencil to make a simple circuit . Use a battery with both terminals on top (like a 9V). Turn the battery upside down on the paper and draw heavy pencil lines whether the terminal rest (don’t connect these lines!). Take an LED and bend the wires apart so they can rest separate on the paper. Rest each wire on a pencil dot. Complete the circuit by drawing lines to connect one terminal of the battery to one end of the LED light and the other end of the battery to the other LED wire.

Make It an Experiment: Explore whether the length or thickness of the line affects how brightly the LED glows. You can make a circuit using aluminum foil strips instead of graphite, too.

See Whether Food Color Affects Its Flavor

Examine the effect of color on perceived taste by coloring different drinks with food coloring and asking subjects to describe their flavor.

Make It an Experiment: Compare the flavor of colored and uncolored versions of the same drinks. Start with drinks that don’t have any color so subjects are less likely to guess the drink flavor in advance.

Test Whether Temperature Affects Maximum Balloon Size

Start with a package of party balloons (ideally all the same color and brand). Part of the fun of this science fair project is planning how you can test the effect of temperature on balloon size. Consider your options in terms of indoor versus outdoor weather and access to freezers and saunas. You need to blow up a balloon and measure its maximum size before it pops. Either get a friend to help with the measurement or fix a measuring tape to the wall and keep an eye on the numbers.

Make It an Experiment: You are well on your way to making an experiment if you make a prediction about whether temperature affects maximum balloon size and design a method to test the hypothesis. Can you propose an explanation for your results?

See If All Crayon Colors Melt at the Same Temperature

Crayons consist of wax, colorants, and sometimes fillers. See whether all crayons melt at the same temperature. You’ll need a bunch of different colors of crayons, a thermometer, and a way to melt them. Fortunately, wax melts at a lower temperature than water boils, so you can slowly heat water, watch for melting, and record the temperature. Another method is to place crayons (not-touching) on a sheet of wax paper on a cookie sheet, heat an oven to 350 ºF (or any temperature, really), and record which crayons melt first.

Make It an Experiment: Make predictions and answer questions. Do you get the same results with different brands of crayons? Do old crayons have the same melting point as new crayons? Watch for control variables , like the size of the crayons and whether you pre-heated the oven.

Make Lightning in Your Mouth

To make lightning in your mouth, crunch a Lifesaver Wint-O-Green or Pep-O-Mint candy in your mouth in front of a mirror in a dark room. Saliva can ruin the effect, so you might want to dry out your mouth with a paper towel first. The blue sparks that resemble lightning are due to an effect called triboluminescence . The sugar in the candy releases electrical energy when the crystals are compressed. The tiny charges attract nitrogen in the air, making miniature lightning bolts. Make It an Experiment: Get different types of hard candies and predict whether they will produce sparks in the dark. See if you can explain why some candies work better than others.

More 6th Grade Science Fair Project Ideas

Here are more ideas for projects to try:

  • Test which brand of gum lasts the longest. Does it matter whether it contains sugar?
  • What is the tallest tower you can build with 100 Legos?
  • What is the fastest way to cool a soda?
  • What metal is most resistant to corrosion by sea water?
  • Does the shape of an ice cube affect how quickly it melts?
  • Which soft drink sprays the most liquid after it is shaken?
  • What type of sweetener do ants prefer?
  • Does the color of a crayon affect how long of a line it will write?
  • Do different types of knots affect the breaking strength of a rope?
  • What type of air freshener makes a school bus smell best to the greatest number of students?
  • How long does it take for milk to go “bad” refrigerated and unrefrigerated?
  • Which apps run down a cell phone battery the fastest?

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Science Struck

Science Struck

22 Truly Interesting Science Fair Projects for 6th Grade

Science fair projects are very important. It is middle school, and finally, your take on science will be taken very seriously. Let me help you show your teachers the intelligent inventor in you with a list of useful 6th grade science fair projects.

Like it? Share it!

Science Fair Projects for 6th Grade

Showcase your project findings with video footage or images at each stage of the project. This will generate a greater interest and the impact of the project will be more.

It is important to note that the base of your project should be a query that interests you. Spend some time researching on your question to understand its depth and how worthy it is to explore.

Depending on the chances of getting positive or justifiable results, finalize your project. Find here, a range of ideas that will serve as a guide, on which you can research further to come up with your own idea that’ll make for an interesting science project.

Science Fair Project Ideas for 6th Grade

What causes tides.

Tides and its effects have been an interesting story for all. Your project on the causation of tides will give you a chance to learn a lot about it. You can also cite the effects of tides in your project.

While designing a skyscraper, what are the points to take into consideration?

Due to the shortness of horizontal space, human beings are now starting to spread vertically. This project will give you a chance to venture into social and environmental issues as well. It is a great way to explore your interests and showcase your presentation skills.

Do plants grow better with music?

There are several theories and even more individuals who will vouch for the fact that plants indeed grow better with music. It is the experiment that proves the similarity between plants and human beings. It proves that plants have the ability to relate to the sound in their environment. It is a really fun project to take up.

How do volcanoes work?

Volcanoes are a matter of intrigue and interest in middle school. It is one of the most popular projects and can be displayed in more ways than one. This project will give you a chance to display your inventive skills and your creativity. Remember, geniuses don’t do different things, they do things differently.

Is it easier to remember a song that you hear than a poem that you read? Why?

I am inclined to believe that it is easier for some and not for some. But research for this project will lead you to delve into the depths of human behavioral psychology. Mind you, this will surely lead you into more and more research in this arena.

What is hydro power? How is it generated?

Power generation is gaining a lot of popularity lately, simply due to its requirement. Moreover, this is an interesting and a fairly easy project to make. You can also go as far as to suggest a certain alternative method to produce power. If it works, you can be famous.

Music and math: Are they correlated?

Many individuals state that they find it much easier to study math while they listen to music. I am one of them. The music forms the white noise that keeps me stuck in the frame of mind to study math. But is there really a correlation between the two?

What causes one to break into tears while cutting an onion? How to avoid it?

Onions cause tears. I am sure that it has caused more people to weep than a heartbreak. With this project, you can explore the causation of this phenomenon. You can come up with ways to avoid it too. I am sure there will be many in the audience who will thank you for your findings.

Can high-pitched voices really break glass? How?

We have all heard of the opera singers and the classical singers who can break glasses with the power of their voice. This project will allow you to explore the reason and the working of these voice-related vibrations that cause destruction. Should be fun, don’t you think?

What happens when you burn a candle at both ends?

This is a very easy project?which is why many people avoid using it. And that is exactly why it will be a unique project. What’s more, you get to have some fun with wax candles. However, be sure to abide by the fire safety measures for yourself and the school.

Can you keep drinks hot? What are the ways of doing so?

Interesting project, isn’t it? Especially if you come up with a strategy and demonstrate how to keep drinks hot. It would be so helpful during the winter months. Come up with the various ways to maintain the temperature, research on the liquids that cool faster, figure out what is the role of insulation … enough clues to get you started. So get going, and find out the best solutions.

How do you make your own barometer?

Sounds interesting. Making your own barometer might help you predict the weather. You could actually compare your forecast with the news telecast. But before I get you even more excited, think of how you would go about it. Research a bit on this idea and come up with things you’ll need and instructions to make a barometer. Your project is going to rock!

Other Examples

✒ Which are the cooking methods that prevent the loss of vitamin C and keep it to the minimum? ✒ Does temperature have anything to do with the inflation of a balloon when it is blown to its maximum size? ✒ Do plants grow better inside than outside? Why? ✒ What is the reason behind coral reefs dying? ✒ What is the effect of acid rains on biomass of radishes? ✒ Do solar flares have a harmful effect on health? ✒ How does an FM radio work? ✒ How will the shrinking of ice caps in the Arctic ocean affect life? ✒ What are the ways to reduce air pollution caused by cars? ✒ What do you understand by light pollution?

All these science projects for 6th graders are no doubt fun, but the basic idea of these is to incite intrigue in students to know more than what is taught in schools through the medium of textbooks. Make use of this opportunity and take as much help from your teachers and parents for the projects?but let it be your baby. Do it with your brain and brawn.

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6th Grade Science Fair Projects

  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College

Ideas for 6th-grade science fair projects can be a challenge to conceive. Projects need to be sophisticated and elaborate enough to show complex thinking but not so complex that they would be impossible for a sixth-grader to execute. These are topics and experiments suitable for upper-grade school or entry-level middle school.

General Project Ideas

The ideas in this section and the following one are phrased as questions because that is generally how schools require sixth-grade students to announce their projects, as a question, or hypothesis , to be tested and answered.

  • What types of fruits or vegetables are suitable for making a battery?
  • Which apps run down a cell phone battery most quickly or use up a lot of data. This is a good project for making attractive graphs.
  • How much paper is required to register for school? Can you propose a way to streamline the process to make it more environmentally friendly? Would this process save time or money?
  • What exactly does a vacuum cleaner pick up? Use a magnifying glass or microscope to look at the contents of a bag or canister. What types of material are not picked up?
  • Does coloring carbonated water change how its taste is perceived?
  • How long does it take for milk to go "bad" refrigerated and unrefrigerated? What about juice?
  • Do all crayons have the same melting points? Why or why not?
  • Do different types of carbonated sodas have different pH? Do you think this can affect tooth decay?
  • What types of fruits, vegetables, and flowers can be used to make a pH indicator? Make some indicator solution, write up a protocol, and test home chemicals to explore the color range of your solution.
  • Can you tell different brands of soda pop apart based on taste?
  • Do some plants grow better inside than outside?

More Complex Projects

The projects in this section tend to be slightly more complex than those suggested in the previous section. They are still appropriate for sixth-grade science fair projects but may take more steps and/or time to execute.

  • What type of air freshener makes a school bus smell best to the greatest number of students?
  • Which type of water contains the lowest amount of chlorine?
  • What type of insulation holds in heat the best?
  • Do different types of knots affect the breaking strength of a rope?
  • Does wiping a doorknob with an antibacterial wipe really reduce the numbers of bacteria? Does using hand sanitizer really reduce the amount of bacteria on your hands?
  • How do different flame retardants affect the flammability and burning rate of cotton?
  • Which cooking method results in the least loss of vitamin C?
  • Does temperature affect the maximum size you can inflate a balloon?
  • Does the color of a crayon affect how long of a line it will write?
  • Does changing the temperature affect how long a pen will last?
  • Do all types of bread mold at the same rate?

Tips and Hints

By the sixth grade , students should have a good understanding of the steps of the scientific method . The best science fair project ideas will be ones with a hypothesis that is tested by an experiment. Then, the student decides whether to accept or reject the hypothesis and draws a conclusion. This is also a good grade level for presenting data in graphs and charts.

Parents and teachers need to understand that sixth-graders still need help with ideas, especially finding ideas that use materials that are readily available and that can be completed within the allotted time frame. One way to come up with a good idea is to look around the house and find topics a sixth-grader may have questions about. Brainstorm these questions and find ones that can be written as a testable hypothesis.

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30 Inventive 6th Grade Science Projects

By Beth Roberts | Last Updated April 21, 2022

Sixth graders are curious and inquisitive learners. The science projects will engage them in thinking scientifically and creatively to solve problems that they care about. They may also spark an interest or provide practice on a topic.

Today we are going to share with you 30 of the best 6th grade science projects with you. All of these are perfect for a variety of teachers, but especially those looking for ideas for lessons that need to be shorter and more interactive. These should also work well as homework assignments or even on an individual level if they are completed in groups.

science projects for middle school 6th grade

1. What Causes Ice to Melt at the Fastest Rate?

Ever wondered about what causes ice to melt quickest? There are a lot of different factors that can affect it but there are a few which are more likely than others. These factors include air temperature and humidity as well as how cold something is.

science projects for middle school 6th grade

Learn more: Science Buddies/Ice Melt

2. Roomba and Lego Maze Coding Project

Wouldn’t it be cool if you could build your own Roomba Maze game with just Lego? Well, now you can! Even better, this project is not only easy to complete but fun for anyone who is looking to try something new.

science projects for middle school 6th grade

Learn more: Pro Lab/Lego Maze

3. Build a pumpkin launcher

 Some examples of these science projects include building a catapult out of Legos and making a tower for the purpose of launching a pumpkin. Building this catapult is just one of the many great ways to study lessons in physics in your classroom.

science projects for middle school 6th grade

Learn more: Frugal Fun for boys and girls/Lego Catapult  

4. Lemon Volcano

Lemon volcano experiments are designed for students to explore how a chemical reaction is affected by different factors and how those factors affect the reactions overall outcome.

Learn more: Babble Dabble Do/Lemon Vocado

5. Making a Shaker Slime

A shaker slime is basically a form of powder that can slather onto your skin, making it feel slimy and wet. Anyone who has done this before will know the feeling of being slimed with goo or wearing gloop. 

science projects for middle school 6th grade

Learn more: Steve Spangler Science/Shaker Slime

6. acid-base reaction with lemon

It is a simple science fair project to demonstrate how lemons react when they come into contact with different types of acids, such as vinegar and baking soda. The results are interesting to observe and can be used as an experiment for younger students who are just beginning their study of the sciences.

science projects for middle school 6th grade

Learn more: Science Bob/Acid-base Reaction

7. Egg Drop challenge

As all people also know the fragile and ever-daunting egg. With a delicate yolk and shell, tiny eggs are easy to crack. Vì vậy để bảo quản trứng không bị vỡ là một thử thách tương đối khó và thú vị. 

science projects for middle school 6th grade

Learn more: Buggy and Buddy/Egg Drop

8. Making giant soap bubbles

Making giant soap bubbles is a fun and easy science project that you can do with kids in a classroom, at home, or any other place. They’re a great way to make learning fun!

science projects for middle school 6th grade

Learn more: Kiwi Co/Giant Bubbles

9. Amazing Plastic Bottle Rocket

For this science project, you will build a model rocket that can launch into the sky. You will design it to obtain maximum height.To make the rocket more stable, you are going to attach parachute-like fins at different points along its length.

science projects for middle school 6th grade

Learn more: The Sci Guys/Bottle Rocket

10. Paper Cup Anemometer 

A paper cup anemometer is the perfect project for a 6th grade science unit. It’s easy to make, durable, and makes a great learning tool and demonstration piece for students. 

Learn more: Left Brain Craft Brain/Anemometer

11.  Relax with Lava Lamp

Lava lamps are a type of novelty lamp whose fluid is usually made to look like an actual lava flow. In this experiment we will learn how lava lamps work!

science projects for middle school 6th grade

Learn more: Science Fun/Lava Lamp

12. How traffic lights work

The traffic lights work in an interesting way. A sensor built into the road is able to detect when a vehicle is passing over it. When a car passes over the sensor, it sends out a radio signal in all directions at frequencies of around 10 kHz frequency. 

science projects for middle school 6th grade

Learn more: Science Project/Traffic Signals

13. Extracting Strawberries DNA 

In this experiment, you will extract and amplify the strawberry DNA, which can be obtained from a strawberry by crushing it up and running it on a gel.

science projects for middle school 6th grade

Learn more: Education/Strawberries DNA

14. how craters are made

A crater is a bowl-shaped cavity, or an area of ground sunk below the surrounding. Craters can be formed through a number of different geological processes, depending on the material that creates them. 

science projects for middle school 6th grade

Learn more: Science Sparks/Craters

15. DANCING RAISINS

When doing a science project, one of the first steps is to think about what questions you want to find answers for. The purpose of this experiment was to answer if the raisins dance when they are not on the top and bottom shelves. 

Learn more: Ryan’s World/Dancing Raisins

16. Create a Paper Ball Run

The paper ball is a simple toy that lets people have fun and exercise their creativity. Such simplicity of design means the paper ball has a variety of uses. Paper ball runs are one variation these, where people can build a contraption to get the balls moving, or let gravity do it.

Learn more: Science Buddies/Paper Ball Run

17. What is a non-Newtonian fluid?

Oobleck is a non-Newtonian fluid, which means that its viscosity changes with pressure. Oobleck is what happens when corn starch and water are mixed together at the right consistency to create a goopy mess. 

science projects for middle school 6th grade

Learn more: Babble Dabbledo/Oobleck

18. Gummy Bear Osmosis

The simplest gummy bear project for 6th graders might be to examine how gumminess relates to pH level. To test this hypothesis students would take a whole tray of gummy bears with fruit juice (choose one juice), half with water, and half with vinegar.

science projects for middle school 6th grade

Learn more: Love to Know/Gummy Bear

19. Mysterious Upside Down Water glass

Many children ask their parents to make an upside down water experiment. It is a fun and easy science project that demonstrates density and the difference in how liquids behave when turned upside down. 

science projects for middle school 6th grade

Learn more: Gally Kids/Upside Down Water

20. Invisible Fire Extinguishers Experiment

 This experiment introduces students learn about how an invisible object can be used as a fire extinguisher. The experiment uses water, detergent and paper towel to create an invisible smoke cloud that will eventually put out a real-world fire such as one in a lab or on stage.

Invisible Extinguisher

Learn more: Science Fun/Invisible Extinguisher

21. Study Examines Plant Growth and Caffeine Effects

Caffeine is a biologically active compound that uses by plants to increase the levels of chlorophylls and nutrients they can absorb. Using data collected from real-life experiments, it offers a scientific review on how caffeine effects plant growth.”

science projects for middle school 6th grade

Learn more: Education/Caffeine Effects on Plant Growth

22. Make a cloud in a bottle

Clouds in a bottle are a popular science fair project for students. Many children in 6th grade have created their own cloud, which is then placed on the top of a soda can and frozen to create a portable cloud you can easily keep at home.

Learn more: Kiwi Crate/Instant Cloud

23. Make a Tallest Tower by Paper

This project is an example of a STEM activity that a 6th grade student might create for their science fair. The idea is to make a stack of paper, the highest tower possible. The students are challenged to think about what materials they will use and how they will build their tower.

Learn more: Science Buddies/Tallest Paper Tower

24. Make Powerful Electromagnet

An electromagnet is an object, usually a coil of wire, that generates an electromagnetic field when electric current is applied. This magnetic field can be directed by the shape of the coil and the strength of the current.

science projects for middle school 6th grade

Learn more: Frugal Fun for Boys and Girls/Electromagnet

25. Build a Big Mable Run 

A marble run is a popular science experiment for kids in elementary school. It’s really easy to construct and simple to conduct tests with. You build your own marble maze and then stick marbles from the top at various points on the track, testing how fast they go as they make their way down to the bottom of the course.

science projects for middle school 6th grade

Learn more: EHC Gear/Mable Run  

26. Making WIGGLEBOT

Science is a lot of fun and it can be done in a variety of ways. One way to do science is by making a toy robot or some kind of gadget. This project will tell you how to make a robot called Wiggle Bot, just like the one we made in class, using nothing but paper, tape, and an elastic band

Learn more: Research Parent/Wigglebot

27. Create a STEADY HAND GAME

Kids love to learn how to make buzz wire games at home and show them off to their friends. The buzz wire game is made out of an old shoelace and hanging beads so that the wires will jingle as they move up and down. These games help kids learn about gravity, motion, and math all at once!

science projects for middle school 6th grade

Learn more: Beginner Life/Buzz Wire Game

28. Static Electricity band

When we did this experiment, it made the water in the bowl feel like it was alive. This can be done using a light bulb to make a tiny bit of electricity in a copper wire. Once that’s done, you place two metal sheets on opposite ends of the light bulb to form a bridge with an equal amount of metal on each side.

Learn more: Steve Spangler Science/Floating Static Bands

29. Efficiency of solar cells

This article is about how solar cells work and what their efficiency is. It also has a scientific chart on the ranking of solar cells and their energy conversion efficiency. Solar cells are used in everyday life to generate electricity that can power homes and businesses.

science projects for middle school 6th grade

Learn more: Education/Photovoltaic Cell

30. How to Cool a Soda fastest

They are: using ice, cold water and salt, using snow, putting it in the freezer, blowing on it hard enough so that condensation builds up on the edge of the can or bottle cap.

science projects for middle school 6th grade

Learn more: Science Buddies/Cool a Soda

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81 Genius 6th Grade Science Fair Projects

November 10, 2023 //  by  Clover

Want to see your students dig into science without even realizing they’re studying? Showcase all your amazing STEM lessons by giving your kids the reins– they’ll jump out of their seats at the opportunity to build projects for the school science fair! Let your kiddos wow their parents, teachers, and peers with how they put their investigations into action. Check out these fabulous ideas and get ready to be amazed by your little scientific geniuses!

1. Carbon Sugar Snake Experiment

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Who wouldn’t get excited by a ‘hand-made’ giant carbon sugar snake? This science experiment shows how a carbon snake is born by burning a mixture of baking soda and sugar. You’ll probably need to consider bringing this one outdoors, but the results will be totally worth it. 

Learn More: Kiwi Co

2. Irons in Breakfast Cereals

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Did you know that extracting all the iron from your body could make two small nails? Let your students investigate this by finding out the amount of food-grade iron in their favorite breakfast cereals. For an even cooler school science project idea? Compare brands and make a bar chart to show the difference.

Learn More: Steve Spangler Science

3. Transform Milk into Plastic

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How can my daily drinking milk become plastic? This activity will teach your kiddos the concept of plastic polymerization from natural resources such as milk and other dairy products. They’ll find it both disgusting and amazing!

Learn More: Science Buddies

4. The Competition of Skateboard Wheels

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Have you got any skateboarding fans in your classroom? They’ll shred their way right through the science fair doors with this one! Bring on the research and inspect the material and tensile strength of various types of skateboard wheels to see how they affect the rebound.

Learn More: Education

5. Powered Boat by Baking Soda

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Let’s level up the same science behind the classic baking soda volcano reaction with this fun boat race Have your kiddos place the materials for the experiment into a modified plastic bottle and then let them test their creations in a competitive race with fuel straight from the kitchen cabinet. 

6. Create Two-Stage Balloon Rocket

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Give the science fair a glow-up with this two-stage balloon rocket experiment. Start by letting your kiddies build their rockets by tapping staws onto inflated balloons; thread some string through the straws and you’re ready for blast off! They’ll be learning about the same laws of motion used by airplanes and rockets!

7. The Sponge Gummy Bears

Behold! The mysterious secrets of gelatin! Turn your kids’ favorite gummy bears into giants by placing them in water and other solutions. This is an incredible food science project to learn about molecules and have FUN! The only rule- don’t eat your lab tools!

8. Motorized Tiny Characters

science projects for middle school 6th grade

Have a science dance party! Your sixth-graders will love these DIY motorized characters who can dance from the simplest source of energy – a homopolar motor. This creative activity makes tiny dancers, but who knows what else your creative constructors will create?

Learn More: Babble Dabble Do

9. Magic Spinning Pens

science projects for middle school 6th grade

This little experiment taps into loads of science skills for any stage. From the investigation to the trial and research, your learners will see what it takes to balance a pen by sheer magnetism. Sounds easy? Think again! They’ll need lots of adjustments in the magnet size and positioning to get a perfect balance.

Learn More: Frugal Fun For Boys And Girl

10. Create a WiggleBot

science projects for middle school 6th grade

“Bleep-bleep-bloop!” Introduce your class to the world of robotics with this fantastic activity. The materials used are easy to find and they’ll love creating these tiny mini-creatures who can draw on their own! What a perfect introduction to learning about power, electrical energy, and its sources.

Learn More: Research Parent

11. Build an Electro-Magnetic Train

science projects for middle school 6th grade

Let your kiddos tinker away with this super fun railway activity. They’ll create a hypothesis and speculate on what needs to be adjusted with the energy source and wire lengths to make the train run smoothly. This experiment is a great introduction to the scientific process for them!

Learn More: Frugal Fun For Boys And Girls

12. Handmade Holiday Greeting Card Circuits

science projects for middle school 6th grade

Everyone loves a festive greeting card! Why not add some science into the holiday season by guiding your little learners to make circuits and embed them into their cards? They’ll explore variables that affect the flow of electricity such as using wood versus rubber. Their results will light up the room!

13. A Solar-Powered Robot Grasshopper

science projects for middle school 6th grade

A scary robot grasshopper that vibrates when it’s placed near any light? WHAT?!? Have your kiddos record this cool grasshopper’s level of movement under different amounts of light and solar power to let them get a better understanding of how this cool tech works!

14. Camera Obscura by Recycled Cans

science projects for middle school 6th grade

This handmade camera will take your kids back in time and will quickly become their favorite “new” tool. They’ll start to understand modern photography, by exploring the fundamental principles of how a camera works. What a fabulous pitch for the school science fair! Come on everybody, say cheese!

15. A Heat-Sensitive, Color-Changing Experience

science projects for middle school 6th grade

Mood rings and lipsticks that change color are always fascinating for kids. You’ll uncover the magic of these cool items by introducing them to the color-changing element of thermochromic pigment. Create some amazing color-changing slime as an example and let your 6th graders get gooey while they learn more! 

Learn More: Left Brain Craft Brain

16. Make Your Own Crystal Landscapes

science projects for middle school 6th grade

It’s alive! Or is it? Let your kids extend their middle school science understanding by delving into the mind-blowing phenomenon of crystal growth. They’ll create a spectacular crystal landscape that’s sure to add dazzle to your science fair. When purchasing ingredients in the US, modify your recipe by using Epsom Salt.

17. Roots Grow Versus Gravity Experiment

science projects for middle school 6th grade

Gravity keeps us on the ground, but does it also affect plants’ growth here on the earth? Let your kiddies find out with this fun windowsill activity that’ll be sure to blow minds at the science fair. They’ll be amazed to see roots growing every which way, as they use gravity as a variable!

18. Seafloor Spreading and the Earthquakes

science projects for middle school 6th grade

What happens when the seafloor spreads? Let’s bring all the science of tectonic plates to life! Using some folded paper and a cardboard cylinder, your kiddos will create a working model of how new rock is formed on the ocean’s floor! 

19. How Plants Help Prevent Tsunami Impact

We all know how destructive the force of a tsunami can be, but did you know that planting trees can help prevent destruction from these natural disasters? Have your kiddos create their very own coastal landscapes, complete with buildings and greenery, then have them recreate a tsunami with some water and assess the damage! 

Learn More: YouTube

20. How Acidic Water ‘Eats’ Rocks

science projects for middle school 6th grade

Can rocks be dissolved in a liquid like sugar in coffee or tea? In this geology science experiment, your students will use a scientific method to investigate how rocks are being ‘eaten’ by acidic water. In your classroom, you’ll be using vinegar concentrations, but you can extend your kids’ learning by exploring what sorts of acids might be eroding rocks out in nature.

21. Cutting Ice Cubes With Wire

science projects for middle school 6th grade

Give a whole new meaning to “break the ice”! Did your middle school students know that they can cut through an ice cube with just a piece of wire and some weights? Demonstrate the method for them as they learn about regelation and the physics of water. All that’s left is for them to have a go themselves! 

22. Growing Bateria

science projects for middle school 6th grade

Don’t do this activity after lunch! Have your kiddies find samples around their homes or in school for testing to reveal the hidden bacteria in each place. It’s easy to make up some petri dishes and then all your little microbiologists will need to do is swab their samples! The results might surprise them!

23. Heart Pump Model

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It might be ‘heart’ to believe, but your kiddos can make a model of a human heart ventricle, using everyday items from around the house! By following the instructions, they can assemble their model made from plastic bottles, balloons, and straws, helping them learn about the complex inner workings of the cardiovascular system. 

Learn More: Tina’s Dynamic Home School Plus

24. Building a Stick Bridge

science projects for middle school 6th grade

Explore the vast array of bridge designs across the world and put your learners’ creativity and engineering skills to the test. Your kiddos will experiment with popsicle sticks to build bridges and find out which model is the safest and holds the most weight.

Learn More: Scholastic

25. Building Stable Frameworks for Earthquakes

science projects for middle school 6th grade

Your future engineers will explore building construction from a safety perspective with this next idea!  Have them build some different structures with popsicle sticks then see how they stand up to a (kiddie-made) earthquake!

Learn More: Science Love to Know

26. Forming Magic Cloud

science projects for middle school 6th grade

This easy 6th-grade science project brings a few welcome clouds to the sunny atmosphere of your science fair. Make a cloud in a bottle using some rubbing alcohol and send your fair-weather friends packing. Want extra experiments? Try twisting the cap back, re-pressurizing the bottle, and see what happens next!

27. Designing Biodomes

science projects for middle school 6th grade

This amazing engineering project challenges your kiddos to create a scale-model biodome! They’ll be able to observe reactions in ecosystems, environments, and food chains, and at the same time, explore the energy flow. What a super hands-on way to introduce them to the topic of plants and animals’ basic needs and the interdependence of an ecosystem.

Learn More: Teach Engineering

28. The Archimedes Squeeze

science projects for middle school 6th grade

Challenge your class to test Archimedes’s principles like real engineers back in the day in this hydrodynamic project! Using aluminum foil balls varying in diameter they’ll learn all about water displacement as they submerge them and weigh what spills over. They’ll be making a splash in the name of science!

29. Cleaning Coins

science projects for middle school 6th grade

Let your kiddos explore the science of cleaning! Give them a couple of different cleaning solutions to experiment with to find out what works and what doesn’t! Then brainstorm and further the experiment to figure out why some things work better than others.

Learn More: Gally Kids

30. Make Your Own PH Indicator

science projects for middle school 6th grade

Don’t have an expensive pH tester? Well, it turns out you don’t need one! Explore the pH scale and let your middle school students make their own indicator solution with a simple ingredient from the grocery aisle; red cabbage! Grocery store science at its finest!

Learn More: Compound Interest

31. Skittles Science Fair Project

science projects for middle school 6th grade

Show off all the colors of the rainbow in this beautiful experiment. We’re sure your kiddos love playing with food, especially candy, and this is certainly no exception! This is a fun and visually impressive way to help them learn about diffusion and balanced solutions! Who knew science could be so colorful?

32. Tooth Decay Egg Experiment

science projects for middle school 6th grade

We all know that lots of sugary drinks can damage our teeth, but which ones are the worst? Challenge your kiddies to find out in this simple experiment! Teach them about tooth enamel and how food can damage it, using eggs to represent teeth. Let them dunk their eggs into different drinks and see what happens! They’ll be shocked by the results!

Learn More: The Forsyth Institute

33. Lightning in Your Mouth

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If you tell your kiddos that they can create lightning in their mouths, it’s likely that they won’t believe you! All you’ll need to prove them wrong is a mirror, a dark room, and some wint-o-green flavored Life Savers to show off some amazing electrical power. Your students will learn about how lightning is made whilst snacking on a delicious treat!

Learn More: Exploratorium

34. Popping Candy

science projects for middle school 6th grade

Using another delicious treat, investigate why popping candy pops. Set up some bowls with oil, water, or vinegar, and have your kiddos add the popping candy! All that’s left is to step back and watch the magic happen!

Learn More: Science Sparks

35. Fruit Rot

This one is certainly a stinky experiment! Let your little scientists test to see which fruit rots the quickest and they’ll learn about the ripening process, too. You can try adjusting this experiment to test what substances are the best for preventing fruit rot. Just make sure they don’t eat any of the fruit!

36. What Attracts Insects

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If you don’t like creepy crawlies, look away now! In this experiment your learners will set up bug traps to determine what exactly attracts bugs; heat, light, or both! They’ll also discover exactly what kind of heat and light works the best for attracting certain bugs, whilst learning more about the insect life cycle, too.

Learn More: Science Projects

37. Paper Towel Experiment

science projects for middle school 6th grade

Which paper towel is the best for absorbing liquid? This super simple experiment is a fantastic way to have your kiddies focus on the scientific method and process. Have them test out different brands of paper towels to test which mops up spills most efficiently! Finally, an experiment that cleans itself up!

Learn More: Explorable

38. Mini Marshmallow Launcher

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This is certainly a fun experiment to try! Using a plastic cup cut in half and a balloon, your kiddos will build their very own contraption to launch some mini marshmallows. This activity is a super fun introduction to physics, and we’re pretty sure there will be some taste testing going on here too, in the name of science, of course!

Learn More: Science Fun

39. Paper Airplane

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Can your kids come up with the ultimate paper airplane? Let them investigate and discover the best design for a paper airplane by testing out different models for their distance, accuracy, and flight time. You can find many examples of paper airplane designs online, and you can also challenge them to create their own paper airplane designs. Ready for take-off!

Learn More: Science Fair Math

40. Simple Ant Experiment

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Take learning outside with this fantastic idea! Have your students find some ants, then place a few different pieces of food nearby. As they come back over the next few hours, they’ll make observations and determine which foods the ants liked best. Just take care to not get bitten! 

Learn More: Mother Natured

41. DIY Taleidoscope

science projects for middle school 6th grade

A taleidoscope is just like a kaleidoscope, but without an end to it, meaning that it is perfect for your kiddos to explore the world around them! Challenge them to have a go at making this interesting contraption to learn more about mirrors and light reflection in a fun, hands-on way.

42. Walking on Eggs

science projects for middle school 6th grade

You’ll definitely want to do this one outside! By learning to stand in a way that distributes their weight evenly, your students will be able to walk across these eggs without breaking them. It’s a super exciting way for them to learn about weight distribution and the amazing properties of eggs. They’ll soon be ‘ egg-sperts’ on this topic!

43. St Patrick’s Day Fizzing Pot

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This experiment is a unique take on the classic volcano experiment but with a St Patrick’s Day twist! Your kiddies will learn about chemical reactions as they predict what will happen when they add baking soda to their vinegar and green food dye mix! Remember to add some golden glitter; a leprechaun’s pot isn’t complete without some gold in it!

Learn More: Little Bins For Little Hands

44. Seed Germinator

science projects for middle school 6th grade

Find out about the amazing properties of a humble seed and how they grow! Your little botanists will be able to witness for themselves how seeds turn into seedlings as they let these ones germinate on a petri dish! As the seedlings grow, your kids’ knowledge will too.

45. Naked Egg Experiment

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Avert your eyes! These eggs are naked! By making their own “naked” eggs, by placing regular eggs into vinegar, your students will learn about the process of osmosis and chemical reactions! They might even notice that the egg changes size once it’s been stripped of its shell! 

46. Pouring Water Down a String

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Your kiddos will be amazed as they watch water walk on a tightrope in this amazing experiment! It’s so easy to try with just a string, an empty clear container, and some water! Soak the string in water then hold it into the glass and see how the water moves down the string. They’ll be exploring surface tension as they marvel at how the water appears to defy gravity!

Learn More: Metro Family Magazine

47. Steady Hands

science projects for middle school 6th grade

Create your own “Operation” game right in your classroom with a battery pack and some wires. Have your learners carefully contort the wire to create an obstacle course that they’ll then need to navigate without making contact and setting off a buzzer!

48. Water Color Chemistry

Sometimes known as the iodine clock experiment, this fun activity is a great opportunity to get (gloved) hands-on with some chemicals! Using a variety of chemicals, your kiddos will watch as starch and Vitamin C battle it out; the starch trying to turn the iodine in the mixture blue. What are you waiting for? Grab some safety goggles and get mixing! 

Learn More: Science Bob

49. Cell Phone Stand

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This project is super simple and your 6th graders will be sure to find it useful. Have them make their own stands for their cell phones. They’ll love having an easy way to show someone a meme or hold their phone up as they film a TikTok dance. Grab some popsicle sticks and paper clips and get gluing!

50. Floating Ball Trick

Floating-Ball-Experiment.jpg

Using air and science your learners can make people believe they’re making a ping pong ball float in mid-air! Start them off with a plastic bottle or paper cone, and a straw, and once they’ve assembled it, they can use their breath to make the ball float; so cool!

51. Fidgeting With The Center of Mass

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Make this complicated physics topic a little easier to understand for your learners by relating it to the infamous fidget spinner! Using a light-up fidget spinner, your kiddos can experiment by removing some of the lights to change how the mass is distributed. Then you can encourage them to observe any differences in how the toy moves as these changes are made! 

Learn More: From Engineer To SAHM

52. Catapult to First Prize

For this exciting experiment, your kiddos will need to build their own catapult! You can guide them to make one easily out of some recycled materials like some pieces of wood, or a wooden spoon and some paper towel rolls. All that’s left is to grab some objects, take aim, and send them flying!

Learn More: Education Possible

53. Balloon Lungs

Not only is this a fun experiment to make, but it will also teach your kids an important lesson about lung health and safety! Have them cut the bottom off a plastic bottle, then use balloons and straws to create ready-to-inflate lungs. This amazing idea gives them a visual of how our lungs do their job!

Learn More: Surviving A Teacher’s Salary

54. What Do Owls Eat?

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Are your kiddos curious about animals, their diet, and their digestion? Well, if they aren’t, they will be soon! Owls are particularly unique in how they swallow and digest their food in that they swallow their food whole, but cannot digest parts like fur or bones. Take your class out in search of some owl pellets and get learning!

Learn More: Gift Of Curiosity

55. Potato Battery

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Is a science fair even a science fair if it doesn’t feature this classic science experiment? Have your little scientists explore the electrifying properties of the humble potato! Did you know it also works with any fruit or vegetable high in potassium? Let your class get creative and make some energy!

Learn More: Kidz World

57. Build a DIY Grow Box

science projects for middle school 6th grade

If it’s too cold out to grow plants outdoors, have your young scientists build their own grow boxes! Line a box with foil, add a UV lamp, and watch the magic happen! They’ll love the chance to grow a whole host of different plants and monitor their progress.

Learn More: Uplifting Mayhem

58. Purify Water With Charcoal

science projects for middle school 6th grade

You’d never think something as dirty as charcoal could actually be used to clean! In this science experiment, your students will discover ways to clean drinking water by creating a filter using activated carbon. This simple experiment will shine a light on the importance of clean drinking water and is sure to be a science fair eye-opener!

Learn More: The Homeschool Scientist

59. Acid Rain Experiment

science projects for middle school 6th grade

Simulate the effects of acid rain on plant life in this hands-on science experiment! Let your kiddos observe the effects of this weather phenomenon by observing how plants react when placed in a mini greenhouse containing vinegar versus one containing only water. The results are truly drastic!

Learn More: STEAM Powered Family

60. Build a Barometer

science projects for middle school 6th grade

This easy science project encourages your kids to make a barometer to measure air pressure and weather changes! Use household items, including metal cans, wire, and rubber bands, to make to create this scientific instrument and track air pressure along with weather changes. They could even try their hand at predicting the weather!

Learn More: KC Edventures

61. Build a Wave Machine

A few simple materials are all you need to make this ingenious wave machine! These are useful for studying sound waves, energy transfer, frequency, amplitude, and more! A bit of measurement, some skewers, clay, and the versatile roll of duct tape are all your kiddies will need to make this science project come to life.

Learn More: Engaging Science Labs

62. Build a Solar Oven

science projects for middle school 6th grade

This classic childhood science project is one that has endured the ages – the solar oven! Pizza boxes, foil, and some plastic wrap turn a simple chunk of cardboard into an amazing experience that teaches your class all about reflection, refraction, heat, and energy. Not to mention, the end result is absolutely delicious! Solar s’mores, anyone?

Learn More: Child Sci

63. Make Mummified Apples

science projects for middle school 6th grade

This creepy science project results in a great display that blends history and science! After a bit of research on mummification in your ancient Egyptians topic, let your little ones try out the process on some apples. Have them try out different substances such as salt and baking powder to see which is most effective!

Learn More: Raising Arizona Kids

64.  Popcorn Investigation

science projects for middle school 6th grade

Have you ever noticed how different brands of popcorn always produce different amounts of leftover kernels? It’s time to set your learners on a mission to discover which brands produce the most and least amount of waste! Have them work through the scientific process of testing, recording, and comparing in this fun project!

Learn More: K Muska Science

65. Windmill Engineering

science projects for middle school 6th grade

This wind-powered science project provides a firsthand look into the power of wind and wind turbines. Using household materials, your young scientists will create a windmill model and engineer it to power a Lego Minifigure Lift. What a great way to encourage perseverance and ingenuity!

66. Learn to Code With Robots

science projects for middle school 6th grade

Beginners and enthusiasts alike can never go wrong with a science project that includes coding! Your young coders will show off the process of designing and writing the code for high-tech robots to complete various tasks. This colorful coding mat makes an amazing addition to any science fair display!

Learn More: Facebook

67. Test Sunscreen Effectiveness

science projects for middle school 6th grade

A blue-ribbon winning science fair project for anyone who loves a day at the beach.  This project takes a look into the effectiveness of different sunscreens in order to determine which is better to use. This project is a great test of the scientific method and provides a real-world connection that is invaluable info for anyone who visits the booth.

Learn More: Pinterest

68. Research and Compare Sugar Content

science projects for middle school 6th grade

This eye-opening science fair project shines a light on the sugar content in what we drink every day. Taking a variety of drinks, your kiddies will predict and measure the actual sugar content of each drink to provide a visual display of the amount of sugar in each brand. This one will definitely make them think twice on their next visit to the vending machine!

69. Play With Magnetism

This fun science project seeks to show your learners the effects of magnetism and ingenuity. Using earth magnets, batteries, and a few other simple materials, this experiment seeks to create a fun spinning top toy that is self-powered, through the presence of a magnetic field! Who said science isn’t like playtime? Definitely not a middle schooler with a rocking science fair project like this!

70. Make Pumpkin Slime

This gross science experiment puts a fun twist on the classic slime-making project. Add water, liquid glue, and liquid start to a healthy serving of pumpkin guts, and watch the magic happen! Your kids will squirm as it morphs into a disgustingly viscous substance that’s perfect for Halloween fun!

71. Baby Product Testing

science projects for middle school 6th grade

Some of the best science fair projects are ones that are relevant, valid, and helpful! This science fair project is great for any kids in your class who are big brothers or sisters! Have them dig into the scientific method and determine which diapers are more absorbent and offer more bang for your buck!

Learn More: Kids Out And About

72. Stain Fighting Science

science projects for middle school 6th grade

Another promising product-testing science fair project is to determine the usefulness and effectiveness of different cleaning solutions. This project has your kids test different laundry products and use the scientific method to determine the best choice for removing hard-to-clean stains. As an extension activity, add a research project on PFAs.

Learn More: Inspiration Laboratories

73. Test the Five-Second Rule

science projects for middle school 6th grade

Ah yes, the timeless ‘five-second rule’. We all know it, and the story goes that any food dropped on the floor is still safe to eat if picked up within five seconds. But is that true? This fun science experiment lets your kiddos test that hypothesis and uncover the real truth behind the five-second myth by analyzing bacteria growth on dropped food products.

Learn More: Sassy Cassy Sews

74. Salty Circuits

Did you know that you can create a model of a circuit using salt? It’s new to us too! This science fair project models how circuits can be created by using salt, liquid watercolor, and a few bits of electrical wire. This is an easy science fair project for kiddos that will definitely light up the judges.

75. Make the Best Cookies Ever!

science projects for middle school 6th grade

Everyone loves a cookie, so why not turn them into a science fair project? Get your learners looking into how different amounts and types of fat (butter, shortening, coconut oil, etc) have an effect on the overall taste and texture of a cookie. While it takes some prep and a few rounds of baking, this science fair project is definitely a tasty way to win!

76.  Test Teeth Whiteners

science projects for middle school 6th grade

Product testing is always a popular choice for science fair projects. Your students can use a project like this one that uses stained hard-boiled eggs as stand-ins for human teeth. Guide them to come up with a hypothesis, and then test different kinds of toothpaste and teeth whiteners to determine which one is best!

77. Study Sibling Similarities

Do siblings have similar fingerprints? This unique science fair project will see your kiddos take a deep dive into how fingerprint types occur within families and sibling groups. By sampling many family groups, they can discover that fingerprint types are also inherited traits!

Learn More: Easy Peasy Science

78. Just How Greasy Are Those Chips?

science projects for middle school 6th grade

If your hands are always covered in grease after eating chips, what does that say about the amount of grease in the whole bag? In this science fair project, your kiddos will aim to prove the amount of fat in chips by removing it and determining its overall weight. It sounds gross, but it’s going to be eye-opening!

79. Science for Sports Fans

science projects for middle school 6th grade

The perfect project for your baseball fans! Grab a few different styles of baseball bats and let them complete this experiment to uncover which bats have the capability to hit the furthest. What an amazing way to work through the scientific process for your kinesthetic learners!

80. Tiny Tesla Coils

Tesla coils are amazing devices, but they’re huge and can be quite dangerous. Have your learners bring this down to a manageable experiment by building their own mini Tesla coils with just a few simple materials. This project will surely be a bright spot at the science fair this year!

81. Build a Water Fountain

This STEM-focused project seeks to examine water circulation by using recycled materials to create a homemade water fountain. Plastic bottles, some tubing, and water are just a few resources your kiddies will need to get moving on this amazing idea. 

rookie parenting science

6th Grade Science Projects

Why Are Sunsets Red Science Experiment STEM (Video)

Why Are Sunsets Red Science Experiment STEM (Video)

This science experiment aims to explore the reason behind the color of sunsets and to understand the physics of light…

Water Cycle Project

Water Cycle Project

Here are three hands on water cycle experiments. These are inspirations and fun experiments for teachers, homeschool parents, and science…

How to Make a Sundial

How to Make a Sundial

Nowadays, we have clocks and watches that tell us when to wake up and leave for work. Before the invention…

Scientific Method Worksheet, Template & Example

Scientific Method Worksheet, Template & Example

Table of Contents What Is The Scientific Method? Scientific Method Steps Scientific Method Examples – Zoey and Sassafras Download Scientific…

Why Is Water Attracted To A Charged Balloon

Why Is Water Attracted To A Charged Balloon

Here is a simple physics experiment using a property called static electricity.  Every object is made up of small particles…

Surface Tension Experiment

Surface Tension Experiment

Surface tension is the glue that binds water into a cohesive sphere and the force that makes water bead up…

CD Case Growing Garden

CD Case Growing Garden

After finishing the Hovercraft and Friction experiment, you will be left with an empty CD case. Here is an upcycling…

3D Flower Drawing For Kids

3D Flower Drawing For Kids

3D drawing is a visual illusion trick kids will love to learn. In this project, we will be learning about…

Cartesian Diver Experiment (Video)

Cartesian Diver Experiment (Video)

How do fish float and sink? This classic experiment is called Cartesian Diver, named after French scientist, mathematician and philosopher scientist, René Descartes. It demonstrates…

Traveling Water Experiment

Traveling Water Experiment

Have you ever wondered why water sticks to your skin? When you jump into a ball pool and come out,…

Floating Water Experiment

Floating Water Experiment

Have you ever wondered if water can defy gravity and float in midair? If you have, it may appear that…

Coin Experiment – Coin in Water

Coin Experiment – Coin in Water

Did you know that water can play tricks on your eyes? This experiment is incredibly simple and requires only a…

How Many Drops of Water Can Fit on a Penny Surface Tension Experiment

How Many Drops of Water Can Fit on a Penny Surface Tension Experiment

Surface tension is a force that pulls together the outermost molecules of a liquid. It makes water form tiny beads…

Toothpick Star Experiment For Kids

Toothpick Star Experiment For Kids

Toothpicks are made of dry wood. Using the absorbing property of wood and the surface tension property of water, you…

Light Refraction Experiments

Light Refraction Experiments

Refraction Of Light Have you ever noticed if you look through a glass of water, the image behind the glass…

Balloon Rocket Car Project STEM Activity

Balloon Rocket Car Project STEM Activity

Propulsion And Newton’s Third Law Every day, we bear witness to the marvels of motion and energy. Airplanes cut through…

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Preparing Your Child for College: Academic and Extracurricular Strategies

12 engaging science vocabulary activities for middle school students, 20 financial literacy activities for middle school students, 24 first week of school activities for middle school students, 32 great digital literacy activities for middle schoolers, 30 jack and the beanstalk activities for preschool, 20 compare and contrast activities for middle schoolers, what is padlet, and how does it work for teachers and students, 15 activities on courage for elementary students, 19 activities for middle school students to improve following directions, 41 of the best 6th grade science projects and experiments.

science projects for middle school 6th grade

Are you looking for science activities to do with your 6th graders? No sweat. We have you covered. Check out our list of 41 science projects and experiments that you can try with your 6th graders this month.

  • How Do Antacids Work? | Biochemistry Discovery Lab – Grades 3-6, Simulate out how antacids work to treat heartburn by using fake stomach enzymes.
  • Mice & Music | Hubpages.com – Grades 3-6, Find out if music affects the performance of mice in a maze.
  • A Magnetic Primer Designer | Sciencebuddies.org – Grades 3-6 Biology project that utilizes magnets to mimic the process that scientists use to replicate DNA, using the polymerase chain reaction.
  • Growing Bacteria in Petri Dishes | Stevespanglerscience.com – Grades 3-6 biology In this science fair project, you must find samples of bacteria from an assortment of surfaces to find the surfaces that are the dirtiest.
  • Yeast Metabolism with and without Aeration | Sciencebuddies.org – Grades 6-8 Biology experiment that evaluates the effects of glucose metabolism in yeast.
  • Aspirin Absorption in Carbohydrate Solutions | All-Science-Fair-Projects.com – Grades 6-8, Does aspirin absorb into the bloodstream quicker if taken with a carbohydrate food? Test aspirin dissolution in an assortment of carbohydrate solutions.
  • Bacteria and Toothpaste | All-Science-Fair-Projects.com – Grades 6-8, Do you know which toothpaste cleans your teeth best? In this project, you will row bacteria from your recently brushed teeth in petri dishes to find out the answer.
  • Effects of Ozone on Plants and Health | Julian’s Science Fair – Grades 4-6, Environmental conditions can dramatically impact plant growth and germination. Does increased ozone stunt germination and plant growth? Grow some plants and find out.
  • Making Batteries from Fruits and Vegetables | Sciencebuddies.org – Grades 4-7, Use veggie power to build a simple battery from a variety of vegetables. Which ones are the most powerful?
  • How Do Roots Grow When the Direction of Gravity Changes? | ScienceBuddies.org -Grades 6-10, Plants respond to gravity by stems that grow upward and roots that grow downward. Experiment with germinating seeds and rotate them to make up down and down up. How do you think the growing seedlings will respond?
  • Hydroponics vs. Soil Growth | All-Science-Fair-Projects.com – Grades 6-8, In this project, students find out if plants grow better in soil or a hydroponic solution.
  • Puppy Proportions: Your Dog’s Early Months | Sciencebuddies.org – Grades 6-8, Find out how a puppy’s weight, growth, and proportions change early in their lives.
  • Do Migratory Birds Like It Hot? | Sciencebuddies.org – Grades 6-8, Pick a species of bird and determine if there is a correlation between air temperature and where and when the birds migrate.
  • That’s a Real Smile! …or is it? | ScienceBuddies.org – Grades 6-8, Can people tell the difference between a fake smile and a real one? Gather information from dozens of volunteers to find out.
  • Build a Raft Powered by Surface Tension | Sciencebuddies.org – Grades 6-10, Learn about the properties of surface water tension, and use it to propel a raft.
  • Which Metal Is the Most Resistant to Corrosion? | Sciencebuddies.org – Grades 6-8, Test several kinds of metal exposed to the air, tap water, and saltwater to determine which are the most resistant to corrosion, and which substances are the most corrosive to them.
  • Ionizing vs. Photoelectric Smoke Detectors | All-Science-Fair-Projects.com – Grades 6-8, Learn how smoke detectors work, and compare the effectiveness of ionizing smoke detectors to photoelectric smoke detectors.
  • Robot Movement | Education.com – Grades 6-8, Construct a robot equipped with sound/touch sensor circuitry. Run it through a maze to find out if it displays sequential or random movement.
  • Repurposed Designs | Education.com – Grades 6-8, Identify items that need repurposing such as e-waste, batteries, and mattresses. Then get creative and Invent your own original repurposed design.
  • Solar-Powered Robot Bug | Sciencebuddies.org – Grades 6-8, Explore electronics and solar energy by building the Frightened Grasshopper, a solar-powered bug.
  • Stressed Out with Beams | Sciencebuddies.org – Grades 6-8, Test the load-bearing capacity of several types of beams, including I-beams, U-beams, rectangular beams, and T-beams.
  • Build a Gauss Rifle | ScienceBuddies.org – Grades 6-8, Use magnets and ball bearings to build a rifle based on magnetism. Investigate how many magnet and ball bearing “stages” affect the velocity and distance of the projectile.
  • Smart Medicine Cabinet | ScienceBuddies.org – Grades 6-8, Do you know someone who needs to take medication daily? Create a sensor that reminds patients when to take their medication.
  • Grow the Best and the Largest Crystals | Sciencebuddies.org – Grades 6-8, Figure out the best temperature for making the largest, purest crystals using water and borax.
  • What’s the Fastest Way to Cool a Soda? | ScienceBuddies.org – Grades 6-8, Experiment with different ways to cool a can of soda.  Find out the fastest way to get your tall cold drink.
  • How Much Potential Energy Do Different Nuts Have? | Education.com – Grades 6-8, Explore the energy of living things. Prove that different varieties of nuts produce electricity in a series of experiments.
  • How Salty Does the Sea Have to Be for an Egg to Float? | ScienceBuddies.org – Grades 6-8, Figure out precisely what concentration of salt in water is required to make an egg float.
  • Washing Detergent & Hydrophobic Soil | Education.com – Grades 6-8, Some soils do not absorb water very well.  Find out why and if washing detergent and change their ability to absorb water.
  • Make Your Own Psychrometer | Sciencebuddies.org – Grades 6-8, Make a psychrometer to measure relative humidity, then use it to measure RH in a variety of weather conditions.
  • Do Our Storm Drains Keep the Ocean Trash Free? | ScienceBuddies.org – Grades 6-8, Test your local grated storm drain inlets to see if they’re up to the task of keeping plastic litter out of your community’s stormwater drainage system. If they’re not, work on improving the design.
  • Can Water Float on Water? | ScienceBuddies.org – Grades 6-8, Can liquid water float on liquid water? Investigate how the density of water is affected by its temperature and salinity.
  • What Weather Factors Create Radiation Fog? | Sciencebuddies.org – Grades 6-8, Make systematic observations about the weather conditions needed to create radiation fog. Can you forecast when and where it will occur?
  • The Science Behind Tsunamis | Sciencebuddies.org – Grades 6-8, Study the effect of water depth on wave velocity. Learn how tsunamis form and create your own simulation model wave tank to generate a tsunami.
  • Killing ‘Vampires’: Saving Money and Power | Sciencebuddies.org – Grades 6-8, In this project, you’ll identify electricity “vampires” in your home, such as computer peripherals and electronic equipment, that use power even when not in use. Find out exactly how much energy they use. Use this eye-opening data to help your family save money on electricity.
  • Which Wheels Work Best? | Education.com – Grades 6-9, Experiment with how different kinds of wheels affect the speed of a skateboard.  You’ll calculate friction co-efficient and its correlation to velocity.
  • Test the Efficiency of a Solar Cell? | Education.com – Grades 6-9, Find out how much of the energy from the sun that reaches a photovoltaic cell is changed over into electricity.  Predict how to position solar cells for maximum conversion.
  • How Acidic Waters Make Rocks Disappear | Sciencebuddies.org – Grades 6-10, Soak some limestone rocks in varying amounts of acidic water.  Determine how much acidity is needed to make them dissolve.
  • Seafloor Spreading | Education.com – Grades 6-12, Use an oatmeal box and some paper to demonstrate seafloor spreading.
  • Storytelling Alice | Sciencebuddies.org – Grades 6-12, Create your own computer-animated story using Carnegie Mellon’s 3D programming software. You’ll learn computer programming with easy-to-use drag and drop tools.
  • Modeling Darcy’s Law | Education.com – Grades 6-12, Model the underground movement of water, utilizing Darcy’s Law.

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All Science Fair Projects

1000 science fair projects with complete instructions.

71 Science Fair Projects for 6th Graders

71 Science Fair Projects for 6th Graders

Our collection of 6th grade science projects offer a fun and hands-on way for middle school students to explore a variety of fascinating science concepts.

Is a dog's mouth cleaner than a human's?

6th Grade Science Fair Project FAQ

What are some easy 6th grade science fair projects.

Each one of these science fair projects are easy for sixth grade students to set up and do!

Burn Rate of a Candle

Soap and Surface Tension

Baking with Yeast

Color and Taste

Growing Mold

Cleaning Teeth: A Science Project

Comparing Blood Pressure

The Chocolate Rock Cycle

Uncovering Fall Colors

Making Oobleck: Liquid or Solid?

Science fair project details right above the FAQ!

What is the best 6th grade science project ever?

We love the Color and Taste science fair project for sixth grade students. The same flavored drink is made red, orange and purple with food coloring. When the three drinks are given to people, see what people taste! It's fascinating to see how color affects our perception of taste in this classic science experiment!

If you're looking for more 6th grade science projects, check out the 6th grade science fair projects at the top of this page! 

Check out more Best Science Fair Projects →

What are some cool 6th grade science fair projects?

Get ready to be amazed by these super cool science projects for 6th graders! With just a few simple things, sixth graders will see how fun and cool science is!

Does Music Help Plants Grow?

Dogs vs. Humans: Bacteria in the Mouth

Singing Glass

Fast Food Nutrition

Cleaning teeth: A Science Project

Video Games and Blood Pressure

Moisturizer Test

What are 5 testable questions for 6th grade?

A testable question is a question that we can answer through a science experiment. To do this, we do a control science experiment, then we change one thing in the experiment to see how it affects what happens. This is how we can discover the answer to our question!

What makes a cloud form?

Can drink and food taste different just by changing its color?

Does the color of light affect photosynthesis?

Does temperature affect seed sprouting?

What makes popcorn pop?

Here are more testable questions along with their science projects →

What are the top 10 science projects for 6th grade?

These are our top 10 science projects for 6th grade, with projects covering biology, chemistry, physics, medicine and health. These projects can be used as science fair project ideas or as a fun experiment to explore different areas of science!

Plant Growth: Hydroponics vs. Soil

Science project details above the FAQ!

Can I do a 6th grade science fair project in a day?

Yes! Quick experiments can be a great option for a science fair project! If you want to explore quick reactions, we have science project ideas on various topics to get you started.

Acids and bases: Test different fluids to see if they are an acid or a base!

Learn how to make your own acid/base indicator using red cabbage and use it to test different fluids! Make Your Own PH Indicator

Chromatography reactions: Separate out colors!

Have you ever wondered why leaves change color in the fall? Let's find out by using chromatography to separate the colors of a green leaf! Uncovering Fall Colors

Heat reactions: Heat speeds things up!

Ever wondered if a balloon filled with water can withstand fire? Fire-Resistant Balloons

What are some hands-on ways to find inspiration for my science fair project?

science projects for middle school 6th grade

There may be free admission days or free passes to a science museum near you! Check your local library for free museum passes, nearby science museums for free entrance days and your credit card for offers.

Find a science museum near you and prepare to be awed by all that you can learn there! I always learn something new and am inspired whenever I go to a science museum!

How do I start a science fair project?

science projects for middle school 6th grade

What should I do after I have a science fair project idea?

science projects for middle school 6th grade

How do I make a science fair board?

science projects for middle school 6th grade

What is the scientific method?

science projects for middle school 6th grade

What is the engineering design process?

science projects for middle school 6th grade

Where can I find a science fair competition?

science projects for middle school 6th grade

The www Virtual Library: Science Fairs website also has a collection of science fairs from all over the world, as well as national, state, regional, local, and virtual competitions!

Learn STEM by Doing (and having fun)!

winning science fair projects

Winning Science Fair Projects [Get Inspired By Past Winners!]

winning science fair projects

Have you won a science fair project?  Interested in sharing your idea?

What we’ve seen in 100s of winning science fair projects.

First, some projects are more advanced.  Some projects were winners in national science fairs.  However, that doesn’t mean a scaled-down version can’t be tried.  Or, maybe an alternative approach.

Second, many of these science fair projects were completed through a mentorship program.  What’s that??  Many universities offer mentor programs geared towards younger students.  These programs pair students with a research lab and faculty member.  Students do experiments with faculty members.  Check out our STEMium camp listings to see more examples.  Typically, programs recruit high school students.  However, if your student is in earlier grades, keep this in mind and explore opportunities in your area.

Third, a ton of solutions center on climate/environment science.  Very cool!!

Finally, ALL of the projects solve a problem or answer a question.  Read through the list and think about your “every day” problems.  Could you solve one with your own science fair project?

We don’t provide full experimental details –  that’s up to you!  Leave a comment below if you’re stuck on how to get started.  Still not sure where to start??  Feel free to check out our germiest spot in school experiment,   alka-seltzer bottle rockets , or our slime science fair project , which can be done in 1-3 days.  Let’s science!

List of winning science fair projects

  • Can air quality be measured with an Arduino device?
  • Can plants survive without sunlight?
  • Effects of ammonium nitrate concentrations on cold pack temperatures
  • Effect of wi-fi signals on the growth of peapods
  • How does vitamin C concentration change in cut fruits over time?
  • Can ocean acidification be lowered with aquatic plants?
  • Examining effects of food on glycemic index after eating
  • How does air pollution and weather effect solar cell output?
  • What is the effect of more turns in the coil on the amount of electricity created?
  • How long can a mechanical pencil lead be before it breaks?
  • Can forest fires be predicted using artificial intelligence?
  • How strong are bioplastic bags?
  • How do different fabrics reduce concentration of polluted air?
  • Can water be extracted from humid air?
  • Which mouthwash is most effective at killing bacteria?
  • Which grows faster: sideways plants vs. upright plants?
  • How can microplastics be removed from ocean water?
  • What blood pressure monitor gives the most consistent readings?
  • What works better for memory retention:  handwriting notes or typing?
  • Does text font/color affect user readability?
  • How does weather change mood?
  • The effects of listening to music while studying
  • How do soil types change plant growth rates?
  • Can eggshells make plants grow faster?
  • Which liquids evaporate faster?
  • How does paper airplane design affect speed and distance?
  • Which sunglasses offer the best UV protection?
  • How does sleep duration affect the body?
  • Apple Watch vs. Fitbit vs. Garmin – which wearable offers the best heart rate accuracy?
  • How does dog saliva affect bacterial growth?
  • How effective are UV lights at killing bacteria?
  • Which stain remover removes stains the best?
  • Do all crayons have the same melting temperature?
  • Measuring sugar content with a laser pointer
  • Do more expensive batteries last longer (and are they worth it)?
  • Which sunscreen/SPF level provides the best protection?
  • Effects of pH on plant growth rates
  • Does exercise change body temperature?
  • How does iPad use before bed affect sleep?
  • Do video games raise your heart rate?
  • How does temperature affect magnetic strength?
  • Which nail polish lasts the longest?
  • How does acid rain effect plants?
  • What types of orange juice have the highest vitamin C concentration?
  • Can sugar make you focus more?
  • Which diaper is best for your baby?
  • Do different types of toilet paper have different absorption properties?
  • Effect of baking powder on muffins
  • Finding which biofuel has the most energy – vegetable oil vs. algae
  • How does the catcher influence the pitcher’s accuracy in baseball?
  • Effects of hydrogen peroxide on plant germination and growth
  • How C. elegans are effected by anti-oxidants and UV light
  • Evaluating the 5-second rule
  • Does chewing gum improve your concentration?
  • How can you win at rock, paper, scissors?
  • Effect of baseball bat material on the distance of a hit ball
  • Effect of clothing on perceived intelligence
  • Can a low-carb diet change cardiovascular markers?
  • Which fruit generates the most electricity?
  • Are fingerprints hereditary?
  • How much fat is in your food?
  • Detecting and removing of pesticides from produce
  • Which accent is most appealing?
  • Which travel mug keeps liquids hot the longest?
  • Which brand of bath bomb dissolves the fastest?
  • Dog or human: who has the cleaner mouth?
  • How salty does water need to be to make an egg float?
  • Effect of fabric softener on the flammability of fabric
  • Which propeller is best at harnessing the wind?
  • How does music type effect customer purchases in a store?
  • Can bacterial strains be used to degrade plastics?
  • Effects of heat on enzyme activity
  • An affordable Braille embosser
  • Using a Raspberry Pi-based solar tracker to improve solar panel output
  • Pill case reminder system
  • Computerized signal for students with ADHD
  • Engineering algal bioscrubbers to prevent global warming
  • Removing impurities from ground water
  • Bacterial strains to create fuel cells
  • Facial recognition alert system for Alzheimer’s patients
  • Do air temperatures affect candle burning rates?
  • Effects of lead in water on yeast
  • Testing antimicrobial effects of spices
  • Are all forms of phone distraction equal while driving?
  • How do shellfish adapt to new environments?
  • Are kids that eat school lunches more likely to be obese than students that eat food from home?
  • How much bacteria is on your orthodontic retainer?
  • Who’s more addicted to a smartphone: parents or kids?
  • Do introverts have better memories than extroverts?
  • How does color affect eyesight?
  • How does noise pollution effect plant growth?
  • How effective are homeopathic mosquito repellents?
  • Does breakfast improve student performance in the first hour of school?
  • What type of dog is most likely to be adopted?
  • Effects of sugar/sugar substitutes on yeast energy output
  • Hydro-focused battery charging station
  • Do deflated footballs go further than fully inflated balls?
  • AI-powered tornado detection system
  • Effects of sugar on children with ADHD
  • EEG-powered remote control car
  • How does color affect memory recall?
  • Improving conduction in a solar-powered oven
  • Smartphone-powered disease diagnostic device (many of these!)
  • Adapting window blinds for solar panels

Still not sure what to do??  Look at The Simpson’s science fair projects!

After literally decades on the air, The Simpson’s even covered the science fair!  Plenty of projects to inspire you such as…

Duffless (Season 4, Episode 16)

In our first example, Lisa grows a gigantic tomato with anabolic steroids.  Unfortunately, Bart intervenes, tomato gets destroyed and Lisa must come up with another project.  Her solution:  is my brother dumber than a hamster?

The Genesis Tub (Season 8, Episode 1)

Another Bart/Lisa science fair rivalry, but this time with a Halloween twist.  Her initial project idea is pretty good!  Can soda dissolve a tooth?  However, things go off the rails from there.

E-I-E-I-Annoying Grunt (Season 11, Episode 5)

Final example:  Less of a “traditional” project, but as the Simpsons are hiding out on a farm, Homer decides to try planting crops.  When Marge suggests fertilizer, Homer borrows plutonium from the power plant.  The result – a new hybrid tomato is born!

CONCLUSION:  It’s not whether you win or lose…  it’s how you do your science!

I’ll never forget my younger daughter’s second science fair experience.  She and her partner did a great job brainstorming ideas.  Then, the enthusiasm waned a bit.  Then, it came back!  After ~3 weekends the final project came together.  Overall, the parents really stood back and let them run with things.

While I helped construct a demo volcano, the board was entirely done by them (3rd grader style complete with Christmas lights!).  You might imagine that it might not have been as sharp in quality as others that had more parental assistance.  🙂

You know what?  It didn’t matter…

At the presentation, they knew their stuff!

They clearly communicated their hypothesis, their experimental design, results and conclusions.

Then…

THEY BLEW UP A VOLCANO!!  WOOHOO!!

When they came back to find a 1st place ribbon, the smiles were ear to ear!  Tons of shrieks and giggles!  Winning science fair projects don’t always start that way.  In the end, what’s most important — have a positive experience.

If you’ve won a science fair competition, share your project in the comments and what your winning strategy involved!  Or, if you’re struggling to narrow it down, share some ideas.

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Science Fair Projects | Middle School 6th, 7th, 8th Grade | Scientific Method

science projects for middle school 6th grade

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Description

Introducing the Scienovate Middle School 6th, 7th, and 8th Grade Science Fair Projects Bundle – a profound and meticulously curated collection that serves as a gateway to intellectual exploration and scientific inquiry. This bundle is meticulously designed to harmonize with the middle school science curriculum, encompassing a diverse spectrum of topics: Physical Science, Life Science, Earth Science, Space Science, Chemistry, Physics, Environmental Science, Engineering, Technology, and Mathematics.

Within the realm of each project lies a journey of deep intellectual engagement:

  • Abstract: A succinct prelude that hints at the profound inquiries and discoveries to come.
  • Background Information: A thorough exploration of the topic, creating a robust foundation for the scientific exploration ahead.
  • Statement of the Problem: A precisely articulated research question or problem, acting as the catalyst for the subsequent investigation.
  • Hypothesis: A testable prediction, crafted with precision, that forms the nucleus of the experimental design.
  • Literature Review: An exploration of the existing body of knowledge, grounding the project in the broader context of scientific understanding.
  • Materials and Methods: A detailed exposition of the procedures and tools used, emphasizing clarity and reproducibility.
  • Presentation of Data: The artful use of charts, graphs, tables, or visuals to convey findings with depth and nuance.
  • Interpretation of Results: The intellectual excavation of meaning from the collected data, drawing profound and insightful conclusions.
  • Comparison of Findings: A critical evaluation of results against the backdrop of the initial hypothesis, fostering a deepened understanding.
  • Explanation of Unexpected Results: The exploration and illumination of unexpected outcomes, turning challenges into avenues for profound insights.
  • Suggestions for Future Research: A roadmap for subsequent exploration, inviting a continuation of the profound scientific journey.
  • Summary of Key Findings: The distillation of discoveries into a cohesive and impactful summary, encapsulating the essence of the profound insights gained.
  • Citations: The foundation of academic integrity, ensuring due credit to the profound minds that have paved the way for the current exploration.

The Scienovate Middle School Science Fair Projects Bundle transcends the realm of mere experiments; it is a catalyst for intellectual growth and profound scientific literacy. By investing in this bundle, you empower students to embark on a journey of deep intellectual significance in their science fair endeavors, all while realizing substantial savings. Seize the opportunity to nurture a generation of profound and innovative minds. Order the Scienovate Middle School Science Fair Projects Bundle today and embark on a journey of profound scientific exploration.

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