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

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

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

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.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

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

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

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.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

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

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!

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.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

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

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

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.

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

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

What happens when colored beams of light mix? You might be surprised.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

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.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

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!

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