This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

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.

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

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

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?

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

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

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

Household items and a bit of imagination will create a CSI kit for your child to have investigative adventures with. Explore the world of forensic science!

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

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

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

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!

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

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!

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

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

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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

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

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

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

The purpose of this science fair project is to build a basic radio.