Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Find out whether packaged seeds actually do expire in this new science fair project idea.

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

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Construct batteries that make electricity from fruits with this fun science fair project.

This science fair project idea explores the different properties & interactions of sugar molecules.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

This project examines what types of objects burn and which burn faster and cleaner.

This science fair project idea provides evidence that air is everywhere and takes up space.

This project investigates the affect of storage temperature on microwave popcorn.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

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

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

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

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

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This science fair project idea determines which method of hand cleansing is the most effective.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.