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.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

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.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Make a wish upon a tree with this craft that also helps your child learn more about Chinese culture.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

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

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

This science fair project idea investigates how the shape of an object affects drag.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

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 experiment examines the role of fat in food, especially in making bread rise and whipping cream.

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

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

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

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

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

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

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

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

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!