This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

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.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

In this fun guessing game, your child uses his sense of smell and taste to figure out what is in the container. Here's how to play:

This science fair project idea demonstrates that plants give off water.

This science fair project idea investigates how the shape of an object affects drag.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea determines which method of hand cleansing is the most effective.

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

In this science fair project, young children notice and track changes in trees throughout the year.

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science fair project teaches students about wilting and browning of salad greens.

This science fair project introduces children to static electricity and the idea that electricity is more than lights and plugs.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

Play Rock Tic-Tac-Toe, the perfect outdoor game for all ages. Help your child develop thinking skills and get away from the TV!

This classic children's game demonstrates how sound travels through air vs. through a solid.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Play this flashlight game with your child to teach him about objects that are transparent, translucent, and opaque.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.