This experiment challenges students to forecast the weather based on the surrounding areas' weather.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

This classic children's game demonstrates how sound travels through air vs. through a solid.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

This science fair project idea explores whether talking to a plant will help it grow.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science fair project idea investigates whether plants can survive being frozen.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

In this science fair project, students make their own rain gauge to measure rainfall.

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!

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

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science fair project idea determines if the color of light affects the growth of plants.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!