Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

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

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

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

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

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

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

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

This science fair project idea explores how length affects the weight a bridge can hold.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Science fair project that examines condensation and the conditions needed in order for dew to form.