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This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

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.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

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?

Creating a home for a toad is an easy and fun project for kids. Here's how to make your very own toad abode.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

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.

Make a backbone model to explore human anatomy and life science.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

Make a lei and bring a touch of the tropical lifestyle into your home!

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

In this design challenge, your child will create a parachute for a small toy using typical household items.

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.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water