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 teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

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.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Will increasing the amount of salt in water effect how slow or fast the water freezes?

This science fair project idea examines whether boys and girls differ in reflexes.

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

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

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.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

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.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

The goal of this project is to create an exciting topographical map out of dough.