Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

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

This biodiversity project examines the biodiversity in your own backyard.

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!

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.

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.

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

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

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?

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Help your child plant a "tea garden": a garden made of herbs for making teas.

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

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Try this chemistry experiment with your curious kid and get some "shocking" results!

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

In this science fair project, students make their own rain gauge to measure rainfall.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.