Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

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

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

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

Discover how and which salt melts ice the quickest.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

Construct and experiment with a periscope using reflected light rays to gather an image.

Learn about Ikebana, or the Japanese art of flower arranging, with your child while artfully arranging spring flowers!

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!

This science fair project idea explores alcoholic fermentation at work by making your own soda.

Discover whether a metal will expand under hot water.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

In this science fair project, students create their own miniature salt flats at home.

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

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

This science fair project idea produces varying pitches of sound.

This project explores ways to prevent static electrical shocks.

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

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.