How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This classic children's game demonstrates how sound travels through air vs. through a solid.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

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

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

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.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

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

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

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

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

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

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!

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

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.

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

Introduce your child to the amazing, almost magical phenomenon of static electricity!

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.

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

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!

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

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.