In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

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

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.

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

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

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

The project determines which type of birds prefer which type of birdseed.

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

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

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

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Test whether plants can grow without sunlight and water.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

This project examines whether people's taste perception is influenced by what they see.

This project determines what category of person is most likely to be ticklish.

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

In this project, sunlight is blocked from a leaf in order to see the affect that sunlight has on leaves.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

This science fair project idea explores whether white light can be separated into different colors.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.