Education.com
Try
Brainzy
Try
Plus

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.

Sort by:
Showing 16 to 30 of 202
What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.
Astronomy
Seventh Grade
Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.
Engineering
Fifth Grade
Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.
Engineering
Sixth Grade
Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.
Astronomy
Fifth Grade
Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.
Astronomy
Eighth Grade
In this fun science fair project, make two different scale models  of our solar system using Astronomical Units and planets' relative size!
Astronomy
Fourth Grade
In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!
Astronomy
Third Grade
In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.
Astronomy
Fifth Grade
In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!
Engineering
Fifth Grade
In this CD hovercraft science project, students will construct their own DIY hovercraft.
Engineering
Fourth Grade
In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.
Engineering
Sixth Grade
Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.
Astronomy
Third Grade

Share these projects with friends