Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This science fair project idea determines if the color of light affects the growth of plants.

This science fair project idea investigates whether plants can survive being frozen.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

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

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Examine the effect of pressure on carbonation in soda.

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.

This science fair project idea determines if the temperature of rubber effects how high it bounces.