Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

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 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.

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!

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!