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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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Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.
Sixth Grade
Easy
Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.
Eighth Grade
Psychology and Sociology
Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.
Middle School
High School
Kids often ask, 'how tall am I?' This science fair project seeks to determine how well kids can guess their own heights.
First Grade
Easy
This science fair project idea determines the most effective method of preserving food.
Elementary School
Fourth 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.
High School
Ninth Grade
We're all familiar with the idea that some songs âget stuck in your head.â This experiment explores the validity of that claim.
High School
Ninth Grade
This science fair project idea is develops new or improved paper making techniques and encourages recycling.
Elementary School
Fourth Grade

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