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Find out whether a longer airplane will fly farther or a wider paper airplane.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

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

Discover whether a metal will expand under hot water.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

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

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

This science fair project will help students learn about non-vascular plants, such as mosses.

Discover how and which salt melts ice the quickest.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

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

Instead of the traditional egg hunt, try this creative variation that will result in a beautiful Easter garden.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.