How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

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.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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

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

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!

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

Give your budding young observers a chance to discover simple machines at use in their own home.

Teach your child how butter is created by shaking up cream the old-fashioned way.

This science fair project idea produces sounds by creating vibrations using different objects.

This science fair project idea produces varying pitches of sound.

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

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

An home science experiment for older students that teaches about the science behind heat.

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

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

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

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

In this fun activity, your child will create their very own solar oven to bake s'mores!

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.