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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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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
This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.
Botany
Third Grade
Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.
Food
Fifth Grade
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 explores whether plants can live and grow when 'watered' with juice, soda, or milk.
Life Science
Botany
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.
Anatomy
Third Grade
This project investigates if one learns to write backwards, is one also able to read backwards?
Behavioral/Health Science
Elementary School
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.
Psychology and Sociology
Zoology
Is there any correlation between hot tubs and high blood pressure? Kids discover the answer (and its biological basis) in this cool science fair project.
Anatomy
Health and Medicine
This experiment determines if the color that a person wears when you first meet them influences your initial impression of their personality.
Behavioral/Health Science
Middle School
Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.
Botany
Kindergarten

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