Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

Construct batteries that make electricity from fruits with this fun science fair project.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

Demonstrate how to tell the age of an egg without having to crack it open.

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

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.