An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

Discover how and which salt melts ice the quickest.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

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

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

In this design challenge, your child will make a bottle rocket using typical household items.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

This science fair project idea examines whether boys and girls differ in reflexes.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Make edible amber fossils with your second grader to explore the fascinating world of science!

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Enjoy those warm spring and summer nights with your child while teaching some basic astronomy at the same time.

This science fair project idea experiments with spinning color wheels and optical illusions.