We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

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

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Test your friends to find out if you can replicate the placebo effect's incredible results.

The project is to investigate yeast fermentation and its results on hand of latex balloons.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

This science fair project idea identifies clouds as a means of predicting the weather.

This science fair project idea examines the reason boats are shaped and engineered.

This science fair project investigates why the number of visible stars changes from place to place.

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

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

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

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

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!

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

Examine the effect of pressure on carbonation in soda.

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

This science fair project idea determines if the temperature of rubber effects how high it bounces.