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.

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!

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.

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.

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!

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.