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

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!

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.

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!

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.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

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

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!

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

In this science project, the center of gravity is explored.

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!

This science experiment has students test whether a snail moves faster on concrete or dirt.

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

This science fair project teaches students the differences between fruits and vegetables.

This science fair project idea compares biodiversity between drops of water.