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This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Make a backbone model to explore human anatomy and life science.

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.

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.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

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!

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

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

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

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

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.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

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 classic children's game demonstrates how sound travels through air vs. through a solid.

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

Has your child ever played weatherman? Try this science activity that lets kids try their hands at observing and predicting the weather.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.