This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

This science fair project investigates why the number of visible stars changes from place to place.

Get your child math and science savvy with this fun outdoor classification game. Using chalk, your child will classify what she sees in the natural world.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Here's a household scavenger hunt that shows kids the natural sources behind everyday objects...and builds reading skills, too!

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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.