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What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

Science fair project that determines whether mass and weight are the same or different.

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

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

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

In this science fair project, students create their own miniature salt flats at home.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

Learn all about balance and motion as your child designs a corn maze!

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.