This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

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

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

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

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

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

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Blanket forts are a kid classic! Let your child create a âfortress of solitudeâ on his own for reading, telling scary stories or for cozy cocooning.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.