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.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

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

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

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

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

Cleaning can be a chore, but not with this sudsy experiment!

Do you think heat can affect a plant's growth rate?

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.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

This year on Mother's Day, try this gift project that brings together an appreciation for gardening with a hands-on lesson in art history.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.