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

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

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

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

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

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

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.

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

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

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

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.

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.

It's a rare kid who doesn't like a sandbox. Next time you're out digging, build in some earth science, too.

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

If your child aspires to be the next Frank Lloyd Wright, we've got some tips on building sand castles that last.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Put those fall leaves to use with this fun art activity. Kids paint and print leaves, to make a beautiful tablecloth, perfect for your next fall celebration.

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.

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

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.

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

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

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

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