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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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In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.
Engineering
Fifth Grade
Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.
Engineering
Fifth 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.
Applied Mathematics
Engineering
How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.
Applied Mathematics
Fifth Grade
What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.
Weather and Climate
Ninth Grade
Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.
Applied Science
High School
In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.
Applied Mathematics
Ninth Grade
How do search engines work? What makes various search engines different? This project delves into the world of web crawlers, caching, indexing and algorithms.
Applied Mathematics
Computers
Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.
Weather and Climate
Fourth Grade
In this science fair project, students make their own rain gauge to measure rainfall.
Weather and Climate
Fourth Grade
In this project students learn about the golden ratio and investigate if it can be used to predict people's assessment of beauty in others.
Applied Science
Applied Mathematics
In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.
Engineering
Sixth Grade

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