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.

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

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 science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

In this experiment you will replicate the mummification process by making a hot dog mummy.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

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

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

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 fair project idea investigates how magnetism can defy the force of gravity.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

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

This science fair project idea's objective is to become familiar with items your family regularly throws in the trash.

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.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

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

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

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.