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 kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

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

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

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.

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

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

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea investigates how the shape of an object affects drag.

Have your child kick off their summer vacation by making a miniature water slide!

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

This science fair project idea examines the reason boats are shaped and engineered.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Help your child learn about animal classification with this fun and delicious activity.

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

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

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.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

Try hammering some plants with your kids to teach them a valuable lesson in flower science while making beautiful artwork in the process!

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