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This science fair project idea tests whether tall people have the ability to swim faster than people of average and shorter heights.

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

In this science experiment, test the pH of soil surrounding a gas station to determine if gas stations have a negative effect on the environment.

Determine whether the application of Febreeze will lower the bacterial count.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

This research project teaches students about synesthesia, a neurological condition that causes sensory overlap.

Science fair project that compares tap water and bottled water for the presence of common impurities.

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

If you're looking for something to keep your kid busy on a warm day, and give him some writing practice in the process, bring on the mud!

How fast is the wind blowing? This science experiment provides step-by-step instructions to help you answer this question.

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.