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

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

In this project children practice the scientific method while playing with puffy paint.

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.

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.

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!

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

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

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

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

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

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

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

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 idea investigates if fats add to the flavor of food.

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

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

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

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.

Explore if planting seeds in a certain direction will affect how fast it germinates.

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

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!