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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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Showing 46 to 60 of 417
This science fair project idea  develops an understanding through experimentation of which shapes are the most structurally strong.
Engineering
Elementary School
Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.
Engineering
Sixth Grade
Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.
Environmental Issues
Engineering
Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.
Earth & Space Science
Weather and Climate
The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.
Ecology
Environmental Issues
In this cool elementary school science fair project idea make a model to learn what happens to the Earth's surface when ice moves over land.
Earth & Space Science
Elementary School
A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.
Ecology
Middle School
This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.
Ecology
Elementary School
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.
Astronomy
Weather and Climate
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!
Engineering
Fifth Grade
Looking for a fun earth science project on continental drifts? Check out this fun science fair project idea to explore how Pangaea may have broken up.
Earth & Space Science
Elementary School
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.
Engineering
Eighth Grade

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