Imagine you're playing with your friends, but no one knows when to start or stop the game, that's what life was like before clocks and calendars. Clocks help us know when things happen, like when it's time for dinner or bedtime. Calendars help us know what day it is, so we can plan for holidays, school days, or even birthdays. Over thousands of years, people made better and better clocks and calendars to make life easier.
Examples
- You know it's lunchtime because your clock says 12:00.
- Your calendar tells you that July 4th is Independence Day.
- Your mom uses the clock on her phone to know when to pick you up from school.
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See also
- How Did the Ancient Greeks Predict the Future?
- How Did the Ancient Greeks Measure Distance?
- How Did the Idea of a 'Day' Come to Be?
- How Did the Printing Press Change the World?
- How Did the Printing Press Change History?
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