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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This experiment uses Rosenberg's Self Esteem Scale to evaluate if there is a correlation between family size and self esteem.
Middle School
Sixth Grade
Are crickets affected by temperature? Test your knowledge! This project examines whether temperature has any effect on the chirping of crickets.
Elementary School
Fourth Grade
This project explores whether people's choice of a 'random' number is not as random as it seems.
Elementary School
Fourth Grade
This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.
Elementary School
Fifth Grade
This middle school science fair project evaluates test subjectsâ ability to determine what a person is feeling by reading their facial microexpressions.
Middle School
Psychology and Sociology
This project will explore whether music influences physical endurance.
Middle School
Seventh Grade
This social science experiment endeavors to determine whether certain types of animals provide greater physical and mental health benefits to their owners.
High School
Ninth Grade
Determine if left-handed people have faster response times.
Middle School
Psychology and Sociology

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