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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.

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

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.

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

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 examines the reason boats are shaped and engineered.

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

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.

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.

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!

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.

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 idea determines if the temperature of rubber effects how high it bounces.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

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!

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

This science fair project idea determines if the color of light affects the growth of plants.

This science fair project idea investigates the hardness property of minerals.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.