This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.

The Galileo inclined plane physics experiment was one of the first ways scientists calculated acceleration due to gravity. Do it yourself in this project!

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

Your child can twist and turn their way to creating a freestanding wire form! When they're done they can position and display their small statue wherever they want.

Re-purpose a tin can into a pretty compost bucket for your family's kitchen counter and learn about the science and fun of recycling and renewing objects.

Develop a new system for predicting geographic changes. Demonstrate the nature of geographic change. Make logical predictions.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

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 experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Teach your child about recycling and gardening as she re-uses an empty plastic milk gallon jug to craft a swan-shaped plant container!

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

Create an outer space painting with chalk, water and black paper in this art project that explores the solar system.

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

This experiment will explore the possibility of creating an infinite object by hand.

Study how we perceive color by exploring optical illusions such as pointillism, digital images, and Ishihara tests.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

Have your child try this classic experiment that demonstrates circular motion using a bucket and rope. Be careful, you might get soaked!

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

In this experiment you will use plastic and magnets to test your local soil composition.

Consult astronomers for opinions and advice. Devise a mathematical argument regarding the probability of other planets supporting extra-terrestrial life.

Make your own recycling game that helps teach your child what can and should be recycled.

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

The project investigates how water and movement affects erosion.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.