Science Fair Project Ideas 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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Uh-oh! Is that a pill sitting on the counter or a piece of candy?
First Grade
Health and Medicine
The objective of this experiment is to college and evaluate the nocturnal insect population in your area and evaluate your sample for health hazards.
Tenth Grade
Health and Medicine
Detail the chemical properties, nutritional value, medicinal effects of garlic, Write a detailed report, prepare recipes.
Middle School
High School
Study the effect of music on blood pressure. Compare blood pressure readings before and after the listening session. Analyze results, write a detailed report.
High School
Test for a correlation between perceived color and heart rate. Using a stethoscope and stop watch, measure the heart rate (beats per minute) of volunteers.
Middle School
High School
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.
Seventh Grade
This science fair project explores whether musicians are better than non-musicians at distinguishing and understanding speech in noisy environments
High School
Ninth Grade
This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.
Elementary School
First Grade

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