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

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

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

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

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

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

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

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.

How powerful is the reaction between baking soda and vinegar? Find out here!

Engineers in training can get started with this simple wheel-and-axle construction activity.

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.

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.

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

Making your own glass cleaner is easy, effective and inexpensive!

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!

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

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

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

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

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

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

This surprisingly good glue recipe comes from common kitchen items.

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!