Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

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

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

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

Use dirt and different colors of craft sand to make unique layers in a clear plastic cup to represent the layers of the Earth.

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

Use simple materials to build a "worm hotel" with your kindergarten soil scientist...and see what worms really do all day.

Help your kindergarten scientist explore an important part of earth science: how soil retains water.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Can't make it to the beach? Bring the science of ocean waves home with this fun earth science-related craft.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

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.

Your child can use leaves and grass to create his own outdoor art in celebration of Earth Day...all he needs are is the great outdoors and some creativity!

It's a rare kid who doesn't like a sandbox. Next time you're out digging, build in some earth science, too.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

This science fair project idea investigates how magnetism can defy the force of gravity.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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 idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

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

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!