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

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?

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 activity, your child will be challenged to make a tower using paper cups.

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

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

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

Help your child celebrate the summer and the sun by making a sandy seascape.

Enjoy those warm spring and summer nights with your child while teaching some basic astronomy at the same time.

Plants and light seem to be good buddies, but how far does the friendship really go?

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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.

Start your toy engines -- this is going to be a fast and friction-filled race!

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Discover whether cold or hot water from the faucet will boil faster on the stove.

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.