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

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

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

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

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

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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

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.

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

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.

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

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

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

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