What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This project is a great way to explore variations in how to paint using watercolor.

Being a kid is hard work. Soothe stresses and calm fears with this DIY Zen garden -- all you need is sand, stones and a shoebox.

This science fair project idea determines if the color of light affects the growth of plants.

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

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Learn with makes water molecules work with this fun and easy science activity!

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

In this activity your child will make a coiling snake out of simple household materials, and also find out why they coil.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

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

Is your fifth grader trying overnight camp this summer? If so, prepare your child for writing a letter home with this activity!

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Many of the world's most important historical documents were written with quill pens. Have your kid make his own quill pen and put his penmanship to the test!

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

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

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.