How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

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.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

In this project, waves of vibrations are experimented with using water in glasses.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Here's a great early reading and science activity for curious children. Learn how to plant your child's name in seeds for a growing writing activity!

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

Allow your first grader to get his artwork outdoors this summer by letting him create a garden art box for his arts and crafts supplies.

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.

Using a toy race car kids create a visual model of the Doppler Effect.

If you're looking for something to keep your kid busy on a warm day, and give him some writing practice in the process, bring on the mud!

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This biodiversity project examines the biodiversity in your own backyard.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.