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

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.

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.

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

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.

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?

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?

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

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

Plants and light seem to be good buddies, but how far does the friendship really go?

Start your toy engines -- this is going to be a fast and friction-filled race!

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

This science fair project teaches students about wilting and browning of salad greens.