Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

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

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

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

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Blend art and science in this hands-on activity that shows your kindergartener how primary colors combine to make secondary colors.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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

In this activity, you'll send your kindergartener on a scavenger hunt to find sounds and create a sound recording. Here's how!

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

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

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

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

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