This project compares the strength of one, two, and three-ply toilet paper.

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

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

In this project, waves of vibrations are experimented with using water in glasses.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Find out whether a longer airplane will fly farther or a wider paper airplane.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This science fair project idea explores whether talking to a plant will help it grow.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

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

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