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!

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.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

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

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

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

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

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

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.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

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

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

This science fair project idea experiments with spinning color wheels and optical illusions.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

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.

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.

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.

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

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.

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

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

Try this chemistry experiment with your curious kid and get some "shocking" results!

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