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In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

This project compares the strength of one, two, and three-ply toilet paper.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

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

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

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

Slip some science into storm watching with a homemade rain gauge!

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science experiment has students test whether a snail moves faster on concrete or dirt.

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

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

This science fair project idea explores whether white light can be separated into different colors.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

This science fair project idea explores substances that cause a bubble to last longer.