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.

In this project, waves of vibrations are experimented with using water in glasses.

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.

This science fair project idea investigates how color affects temperature.

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

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot navigate around several obstacles.

This science fair project idea explores the egg's thin membrane.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

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

In this project students experiment with making music using only glasses of water.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science fair project idea's objective is to become familiar with items your family regularly throws in the trash.