This biodiversity project examines the biodiversity in your own backyard.

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

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Plant a mini herb garden and teach your child about science and nature.

Using a toy race car kids create a visual model of the Doppler Effect.

This science fair project idea produces varying pitches of sound.

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.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

With some cookie dough and ordinary household objects, let your kindergartener explore how fossil imprints are made.

In this science fair project, students use the streak test to tell minerals apart from each other.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

This science fair project idea investigates the hardness property of minerals.

Get your child math and science savvy with this fun outdoor classification game. Using chalk, your child will classify what she sees in the natural world.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.