In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

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.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

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.

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

This project examines whether people's taste perception is influenced by what they see.

This project determines what category of person is most likely to be ticklish.

How do organic materials become soil? This science experiment measures what materials biodegrade.