This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

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.

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.

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?

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

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

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

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

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.

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.

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!

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!

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

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

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!

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

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

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

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.

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.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

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

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