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.

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

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Is your child struggling with the principles of magnetism? Here's a fun activity to demonstrate polarity and understand the basic principles of magnetism.

Have your child try this classic experiment that demonstrates circular motion using a bucket and rope. Be careful, you might get soaked!

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

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

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

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

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

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

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

This science project examines the history of earthquakes and what we can do to prevent future disasters.

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!

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.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

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!

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

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

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!