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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 fair project idea determines which method of hand cleansing is the most effective.
First Grade
Fourth Grade
What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.
Fourth Grade
Easy
Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.
Fourth Grade
Weather and Climate
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 experiment tests if dog saliva can really help heal wounds.
Fourth Grade
Elementary School
Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!
Fourth Grade
Zoology
It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.
Fourth Grade
Environmental Issues
Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!
Fourth Grade
Zoology
This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.
Fourth Grade
Elementary School
Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.
Fourth Grade
Second Grade

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