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Science Fair Project Ideas

Education.com has assembled a vast collection of science fair project ideas written by science teachers, professional scientists, and educational consultants on popular science fair topics ranging from physics and chemistry to biology and even sociology. We offer free science fair ideas suitable for every grade level, be it preschool, kindergarten, elementary school, middle school, or high school. Check the boxes in the sidebar to filter your results, or use the search bar to find that perfect science fair project or experiment your child will be sure to love.

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Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.
Science Fair Project Ideas
Fourth Grade
Check out this cool science fair project on identifying rocks and minerals for kids.
Science Fair Project Ideas
Sixth Grade
Learn about endothermic and exothermic reactions and energy exchange by experimenting with temperature change in chemical reactions.
Science Fair Project Ideas
Seventh Grade
Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.
Science Fair Project Ideas
Eighth Grade
Little ones looking to get their hands dirty will love this series of fun plant experiments for kids that teach essential plant biology concepts such as photosynthesis, transpiration, capillary action, and tropisms in fun and hands-on ways. Little green thumbs get to do everything from literally cloning cabbage (which is actually quite easy to do, and very cool) to building their own working greenhouses. Check it out!
Science Fair Project Ideas
Chemistry
In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!
Science Fair Project Ideas
Third Grade
Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.
Science Fair Project Ideas
Fifth Grade
The purpose of this science fair project is to explore if the angle of the sun striking the solar cell affects how much electricity the cell releases.
Science Fair Project Ideas
Middle School
Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.
Aerodynamics
Science Fair Project Ideas
4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.
Science Fair Project Ideas
Fourth Grade
Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?
Aerodynamics
Fifth Grade
Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.
Science Fair Project Ideas
Fourth Grade

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