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This kindergarten science activity will help her explore the changing states of matter which transform an egg from raw to soft to hard-boiled.

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

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

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.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

This science fair project idea demonstrates sonar mapping of the ocean floor.

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

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

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

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

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

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

This science fair project idea produces varying pitches of sound.

Illustrate the idea of light refraction with this exciting and mystifying experiment.

For this activity your child will use the ready made glycerin base to create elegant rose petal hand soaps.

Before digital cameras, before Polaroids, there was the original pinhole camera. Build a pinhole camera and see what true vintage photography looks like!

Help your kindergarten scientist discover relative size, density, and buoyancy with this fun, pumpkin science project!

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

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!