In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Help children understand the power of germs and the importance of hand washing with this visual activity that introduces the concept of scientific inquiry.

This project makes young children uniquely aware of their sense of touch and its ability to alone give them information about the world around them.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

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!

In this science fair project, young children notice and track changes in trees throughout the year.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

This science experiment has students test whether a snail moves faster on concrete or dirt.

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

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

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, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

In this activity, your student will be invited to build a chair out of building blocks that is designed to meet the specific size and shape of a small doll or toy figure.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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

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

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

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

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 determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

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

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.