Starting from the Greenwich meridian this book takes the reader east imagining what children are doing at that moment in each of the twenty-four time zones.

There was a time when time itself was undefined...no one knew the difference between a minute, an hour, or a day. Then people began making tools to measure time using the sun, the moon, and water. Using this knowledge they began to build clocks and from that created calendars made up of months and years.

Learn about the component parts that make up units of time.

An introduction to time discusses the inventions and communication used to tell time throughout history, including hour glasses and atomic clocks to calendars and chronometers.

"This picture book offers explanations of how to tell time, the difference between digital and analog time and AM and PM"--

Learn about the different times of the day, and activities associated with each.

Presents the concept of time throughout a day with simple text and photographs.

It's About Time-to wake up-to learn, to play, to read-to cuddle up in the blankets and to dream. A twenty-four -- hour day is full of great things to do! Endearing illustrations depicting things kids do every day make this an easy introduction to the skill of telling time, perfect for very young readers.

"Time is measured in a variety of units, including seconds, hours, days, weeks, and decades. This practice began with the sundials of ancient Egypt, but we still use clocks and calendars today to keep track of our time. This volume guides readers through measuring time, figuring out time zones, and learning about classic and modern timepieces. Through a fun activity and introductions to some famous scientists, readers will gain a better understanding...