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In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

This project compares the strength of one, two, and three-ply toilet paper.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

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

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Using a toy race car kids create a visual model of the Doppler Effect.

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

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

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

This science fair project idea explores how length affects the weight a bridge can hold.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Is your child a young ornithologist in the making?

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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

In this project children practice the scientific method while playing with puffy paint.

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

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?