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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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Showing 91 to 105 of 665
How does frost form?  How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.
Weather and Climate
Third Grade
Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.
Weather and Climate
Second Grade
How do search engines work? What makes various search engines different? This project delves into the world of web crawlers, caching, indexing and algorithms.
Psychology and Sociology
Seventh Grade
The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.
Ecology
Environmental Issues
A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.
Ecology
Middle School
Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.
Earth & Space Science
Elementary School
The objective of this experiment is to evaluate whether funny advertisements are more or less effective than serious advertisements.
Psychology and Sociology
Tenth Grade
What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!
Ecology
Oceans
In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.
Earth & Space Science
Third Grade
This science fair project idea explores how water and ice can change the form of rocks.
Geology
Elementary School

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