Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This science fair project idea provides evidence that air is everywhere and takes up space.

This science fair project idea explores which fruit molds the fastest.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

This activity will introduce your child to the four different components of blood and give him a fun way to visualize its properties.

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

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

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

Discover whether a metal will expand under hot water.

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

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

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

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 experiment evaluates if a noisy environment makes it harder for test subjects to perform tasks that require hand-eye coordination.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

This easy at-home experiment is a great way to "see" science.

This project investigates the affect of storage temperature on microwave popcorn.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

In this project children practice the scientific method while playing with puffy paint.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

Find out which kind of bubble wrap fares best when put in impact.

In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!