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

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

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

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

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.

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

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!

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!

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.

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!

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.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

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

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

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

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

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!

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Help your curious third grader construct a dazzling spinning wheel that will teach him about the science behind colors while providing some silly entertainment!

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?

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.

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