In this science fair project, young children discover what happens when two fluids that have different densities get together.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

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

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Help your child measure breezy weather in her environment by making a wind vane for kids, a simple version of the classic scientific measurement tool.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

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.

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

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

Here's a science activity to help your child investigate how seeds are designed to travel.

Conduct a simple experiment with your child to study how dirt tracks change as they age in this 1st grade science activity.

In this project, a basketball containing different psi is dropped to see how well it bounces.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

This science fair project idea explores how length affects the weight a bridge can hold.

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