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.

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

Make sourdough bread...and learn some colonial history and modern science in the process!

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 idea project identifies the active ingredients in soap and experiments with the properties of soap.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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.

Introduce your child to science with something they see everyday--their shadow!

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

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

After completing this fun science project, your child will have a better understanding of plants, and they may even develop a green thumb in the process!

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Make a kindergarten "discovery table" that reinforces both science and writing skills. Here's how:

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

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

First graders are learning to think like scientists. What better place to start, then by raising tadpoles? This hands-on activity explores science in action!

Help your child build her very own science laboratory at home for experiments and science projects. This is a quick, easy, and fun educational tool!

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

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

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.