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.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

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

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

This science fair project idea produces varying pitches of sound.

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

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

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

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

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

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

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.

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

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

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

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.

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!

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

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

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

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

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

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

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

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

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