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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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This science experiment tests if dog saliva can really help heal wounds.
Microbiology
Elementary School
How does mold grow? Kids find out by testing different conditions to measure mold growth rate and learn about what factors cause mold to grow more quickly.
Microbiology
Sixth Grade
Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.
Anatomy
Fourth Grade
Learn about how sugar fermentation and growing yeast in this easy science project! Yeast is a eukaryotic microbe that puts the fun in fungus!
Microbiology
Life Science
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.
Zoology
Eighth Grade
What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!
Botany
Fifth Grade
Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.
Engineering
Fifth Grade
This science fair project idea  develops an understanding through experimentation of which shapes are the most structurally strong.
Engineering
Elementary School
In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.
Engineering
Fifth Grade
This science fair project examines how seeds hitchhike on animals and clothing.
Botany
Elementary School

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