The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

This science fair project idea examines which type of insulation holds in the most heat.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Invite your third grader to do taste test science to observe how a strawberry tastes when it is paired with various condiments. The results may be surprising!

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

Find out whether a longer airplane will fly farther or a wider paper airplane.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

This science fair project idea produces varying pitches of sound.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

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

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.

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

This science fair project idea investigates if fats add to the flavor of food.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

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

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

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

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

This Valentine's Day, pair up science and crafting with this simple crystal formation project that's sure to bring a little love into your home.

This science fair project will help students learn about non-vascular plants, such as mosses.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

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