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

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

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.

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.

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

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

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel 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.

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

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!

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!

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.

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

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

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

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

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.

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

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

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