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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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In this experiment, the weight of aluminum cans will be compared.
Third Grade
Elementary School
Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.
Third Grade
Easy
Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.
Ninth Grade
Physics
Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.
Third Grade
Medium
This science fair project idea determines which method of hand cleansing is the most effective.
Third Grade
Elementary School
In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.
Third Grade
Medium
What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.
Third Grade
Anatomy
Measure the densities of various fruits and vegetables to determine if there is a relationship between density and nutritional value.
Ninth Grade
Tenth Grade
In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!
Third Grade
Astronomy
This experiment evaluates how a diet that is rich in 'mood-enhancing' foods affects the way people feel over several weeks.
Ninth Grade
High School
This project examines whether people's taste perception is influenced by what they see.
Third Grade
Elementary School

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