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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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Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.
Earth & Space Science
Weather and Climate
Learn about the horizontal and vertical motion of a projectile in this cool physics science fair project idea for advanced middle and high school students.
Physics
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
In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!
Physics
Fifth Grade
This science fair project idea  develops an understanding through experimentation of which shapes are the most structurally strong.
Physics
Elementary School
Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.
Environmental Issues
Fifth Grade
Discover how and which salt melts ice the quickest.
Chemistry
Elementary School
Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.
Astronomy
Physical Science
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
This science fair project idea explores how water and ice can change the form of rocks.
Geology
Elementary School

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