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

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!

Your child can help your family pet take a breather, and help herself relax, too, with this soothing activity.

This project explores what happens to a rubber band when it is heated and cooled.

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

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Have your child kick off their summer vacation by making a miniature water slide!

Learn about the growing app design field by designing a new or improved app for smartphones.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

This science fair project introduces children to static electricity and the idea that electricity is more than lights and plugs.

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

This science fair project idea investigates the hardness property of minerals.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Learn about the field of psychophysics and to learn about "Just Noticeable Differences."

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Is there any correlation between hot tubs and high blood pressure? Kids discover the answer (and its biological basis) in this cool science fair project.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

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

Have your little astronaut create her own crater-filled moon with this fun craft project that encourages learning about the final frontier.

Challenge your learner to design and build a city of their own in this creative engineering activity.

This fun and crafty activity is easy enough for your child to lend a helping hand and makes a great indoor or outdoor game.

Science fair project that guides you through how to test the humidity in the environment using a homemade psychrometer.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.