An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

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

Try this chemistry experiment with your curious kid and get some "shocking" results!

Engineers in training can get started with this simple wheel-and-axle construction activity.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

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

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

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.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Here's a science activity that lets a first grader use an empty dish detergent bottle to create his own fountain as he explores air pressure.

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!