Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

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

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

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

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

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.

How powerful is the reaction between baking soda and vinegar? Find out here!

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

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.

Making your own glass cleaner is easy, effective and inexpensive!

This science fair project idea explores whether talking to a plant will help it grow.

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

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

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.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

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!

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

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.

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!

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

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.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

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!

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

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