Explains how to tell time as the farm animals devise a schedule to do the farmer's chore for him on the night before his birthday. Includes a fold-out clock face for practice.
The story of John Harrison, inventor of watches and clocks, who spent forty years working on a time-machine which could be used to accurately determine longitude at sea.
An introduction to time zones that explains why they exist, what daylight savings time does, and additional facts and history about time zones. Includes instructions for a related activity.