In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Using a toy race car kids create a visual model of the Doppler Effect.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

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

Here's a pressed leaf card project that puts science and writing together for your second grader.

Use pepper and soap to discover some fun facts about the properties of water.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

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

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!

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

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!

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

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.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

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.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

This project can help prepare your child for a trip to the tide pools, or give him a way to remember some of the many creatures he saw during his visit.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

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?

This science fair project teaches students about wilting and browning of salad greens.

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