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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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Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.
High School
Easy
Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.
High School
Medium
Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.
Fifth Grade
Middle School
The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.
First Grade
Medium
Test marble and limestone to determine if acid rain is harmful enough to damage buildings and stone monuments.
Fourth Grade
Fifth Grade
Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.
Fourth Grade
Medium
Looking for a way to keep your kid busy during the long, hot days of summer? These science projects will spark your young learner's curiosity going into the new school year. What's more, conducting an experiment or two is a great way to take your mind off the sweltering temperatures!
Elementary School
Physical Science
In this science fair project, students use the streak test to tell minerals apart from each other.
Elementary School
Second Grade
In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.
Kindergarten
Elementary School
Check out this cool science fair project on identifying rocks and minerals for kids.
Sixth Grade
Earth & Space Science
This science fair project idea determines whether land or water warms more quickly and investigates how solar radiation increases the temperature of surfaces.
Elementary School
Earth & Space Science

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