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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 fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.
Food
Second Grade
This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.
Behavioral/Health Science
Elementary School
Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.
Health and Medicine
Fifth Grade
It has long been believed that weather influences mood and behavior. This experiment will evaluate if weather can really impact the way people feel.
Behavioral/Health Science
Middle School
In this science fair project, students make their own rain gauge to measure rainfall.
Weather and Climate
Fourth Grade
Can playing video games trigger an adrenaline rush even though there's no real danger? In this cool experiment you'll learn all about how fight-or-flight works!
Health and Medicine
Psychology and Sociology
What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.
Behavioral/Health Science
Elementary School
This science fair project idea is develops new or improved paper making techniques and encourages recycling.
Consumer Science
Elementary School
This experiment evaluates which road-side objects have the greatest influence on driving speed.
Behavioral/Health Science
Middle School
Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.
Weather and Climate
Fourth Grade
Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.
Food
Third Grade
Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.
Weather and Climate
Second Grade
Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.
Weather and Climate
Fifth Grade
This experiment investigates whether font choice affects peoplesâ ability to remember the information that they read.
Behavioral/Health Science
Middle School
Is there really such a thing as healthy gum? Students will learn what factors in chewing gum contribute to healthy teeth in this exciting science fair project.
Food
Sixth Grade

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