Demonstrate Newton's laws of motion by examining the relationship between mass, force, and acceleration during free-fall.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Are you ready to pilot your own airplane? Well, then take to the skies with this high-flying project!

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

This project determines whether hands-on practice, mental practice, or no practice leads to better shooting of free-throws.

This science fair project researches the most effective method to cut an onion and stay tear-free.

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

This project involves the development of a website using free software online to promote the value of science.

Free science fair project idea examining how different types of water affect plant germination and growth.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

Do suds equal more clean or does a sud-free cleaning agent works just as well or even better?

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Free science fair project idea that examines the ergonomics of your environment. Redesign your living space to be better suited to your lifestyle.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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!

Free science fair project idea that examines cheating in school-age children. Project involves a task in which children are tested on various tasks.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.