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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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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
Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.
Physics
Electricity and Magnetism
This science fair project idea  develops an understanding through experimentation of which shapes are the most structurally strong.
Physics
Elementary School
Check out this cool and free middle school science fair project idea on how to make a solar oven.
Physics
Seventh Grade
In this CD hovercraft science project, students will construct their own DIY hovercraft.
Physics
Fourth Grade
For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.
Electricity and Magnetism
Second Grade
How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!
Chemistry
Middle School

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