This classic children's game demonstrates how sound travels through air vs. through a solid.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Using a toy race car kids create a visual model of the Doppler Effect.

In this project children practice the scientific method while playing with puffy paint.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

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

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

In this science fair project, students use the streak test to tell minerals apart from each other.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!