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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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Examine how a battery can be made from everyday materials.
Physics
Middle School
In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.
Electricity and Magnetism
Chemistry
What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!
Electricity and Magnetism
Sixth Grade
Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.
Physics
Fourth Grade
Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.
Electricity and Magnetism
Eighth Grade
Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.
Electricity and Magnetism
Sixth Grade
Do people only 'hear' what they want to hear? Explore pareidolia and psychoacoustics  with this easy science fair project that pits melody against white noise.
Psychology and Sociology
Eighth Grade
Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.
Physics
Sixth Grade

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