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

Find out whether a longer airplane will fly farther or a wider paper airplane.

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Your child can explore the wonders of science, and the concept of dehydration, along with creating a healthy and tasty treat!

In this CD hovercraft science project, students will construct their own DIY hovercraft.

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

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

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

Discover how and which salt melts ice the quickest.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

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

Construct and experiment with a periscope using reflected light rays to gather an image.

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.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

Looking for a fun summer adventure? Learn what it was like to be a prospector during the California Gold Rush by panning for gold in a local creek.

Discover whether a metal will expand under hot water.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

In this science fair project, students create their own miniature salt flats at home.

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

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

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

This science fair project idea produces varying pitches of sound.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

In this science fair project, students use the streak test to tell minerals apart from each other.

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