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!

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

When critters protect themselves by taking on the patterns of nature, it's called "camouflage." Play this camouflage matching game with your child!

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

Science fair project in which you will start a fire from scratch without using matches or a lighter.

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Clouds are formed when warm and cold air meet. Here's a way for kids to see it all up close!

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!

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

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.

In this fun experiment, we'll find out how color affects heat absorption!

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

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.

Satisfy your kindergartener's fascination of different sounds with this easy science project, where they'll use their ears instead of their eyes to identify sounds!

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

With some cookie dough and ordinary household objects, let your kindergartener explore how fossil imprints are made.

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.

Lead your first grader on a nature walk ... with a scavenger hunt-style twist! They'll try to capture photos that correspond to paint chip colors.

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?

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

This simple experiment serves as an introduction to the greenhouse effect.

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