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.

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

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

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

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

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

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.

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.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

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

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

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

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts 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 fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

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

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

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

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

Before your treat your child (and yourself!) to a yummy snack, help her learn a little about Sir Isaac Newton's First Law of Motion!

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

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!

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

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.

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.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

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!

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.