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.

Expand on your childâs time-telling skills by helping him learn how an analog clock and a digital clock correspond.

In this matching activity, your kid will match the clock faces representing analog time with the numeric readings representing digital time.

In this activity, your child will explore techniques that support patience and learn to practice mindfulness when waiting.

Time is an abstract concept that's difficult to grasp. But waiting for the turkey to come out of the oven on Thanksgiving is a concretely yummy experience.

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.

This is a simple, fast game that you and your child can make together to help him master rounding with decimals.

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!

Help your third grader learn time zones with this fun map activity!

Try to pop other opponents balloons while trying to protect your own. This exciting game is sure to be a hit with the kids at your next party!

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.

Follow these easy instructions to make a working sundial with your kid! Find out what other cool things the Aztecs created in this activity.

Your fourth grader will get their mind working with this simple "Chanukah" anagram game. They will hone their language and spelling skills with this one!

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?

Confetti wands add some colorful cheer to your New Year's Eve celebration. Wave these confetti wands at midnight and watch the colors fly.

Practice of math facts is usually limited to drill sheets and flashcards. But kids are more likely to tune in to math facts if practice is presented as a game!

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

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 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.

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