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

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

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.

Start your toy engines -- this is going to be a fast and friction-filled race!

Discover whether cold or hot water from the faucet will boil faster on the stove.

Come take off your shoes and explore with your feet. Your child will embark on a barefoot adventure as he plays with different textures.

This science fair project idea investigates if fats add to the flavor of food.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

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

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Engineers in training can get started with this simple wheel-and-axle construction activity.

This science fair project teaches students the differences between fruits and vegetables.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

This science experiment has students test whether a snail moves faster on concrete or dirt.

This science fair project examines how seeds hitchhike on animals and clothing.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.