Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

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 how temperature affects density and how density in turn affects the behavior of helium gas.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

In this activity your child will make a coiling snake out of simple household materials, and also find out why they coil.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

This science fair project idea identifies trees using a dichotomous key.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

In this science fair project, students use the streak test to tell minerals apart from each other.

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

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

Discover whether cold or hot water from the faucet will boil faster on the stove.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This science fair project idea examines the reason boats are shaped and engineered.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

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

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Engineers in training can get started with this simple wheel-and-axle construction activity.

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.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Learn whether writing things down really makes things easier to remember.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

Discover flight initiation distance as you play around in the park with this fun bird watching project!