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

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

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

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

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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 project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

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

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

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

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

This project examines whether people's taste perception is influenced by what they see.

This project determines what category of person is most likely to be ticklish.

This activity allows your kindergartener to translate what they observe into a beautiful poem.

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

People have favorite flavors, but what about ants? Which ant food is the most popular?

What better way to nurture your child's imagination than by making a fairy house out of materials found in nature!

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

What's a crater, and how does it happen? Here's a kindergarten experiment with safe, nontoxic ingredients.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

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

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

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

Use simple materials to build a "worm hotel" with your kindergarten soil scientist...and see what worms really do all day.

In this hands-on activity, kids learn what it takes to foster seedlings into full-grown plants, all in a regular old soda bottle!

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!