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Understanding Historians' Methods for Keeping Track of Time

This resource explores how historians organize and measure time, highlighting key divisions such as decades, centuries, and millennia. It explains calendar systems, including B.C. (before Christ), A.D. (Anno Domini), and BCE (before common era), and how these systems aid historical dating. Engage with practical exercises to calculate years and durations of historical events, such as the Barno Empire's timeline and specific dates from history, fostering a deeper comprehension of chronological organization.

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Understanding Historians' Methods for Keeping Track of Time

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  1. Warm-Up Copy HW Start page 15 of your notebook by explaining how historians keep track of time

  2. Organizing Time • Historians divide time in to ____________ or _____________. • 10 yrs.=______________________ • 100yrs.=______________________ • 1000 yrs.=________________________

  3. Calendars

  4. Measuring Time • Calendar-dating system • “B.C.”-”before Christ” • BCE-Before common era • “A.D.” anno domini-”in the year of our Lord” • CE-Common Era

  5. How many yrs ago was the year 1582 BCE?

  6. How many years ago was the year 500 CE?

  7. What year was it 4333 yrs. ago?

  8. If the Barno Empire began in 546BCE and ended in 123 BCE…How long did it last?

  9. If the Barno Empire started in 345 BCE and ended in 780 CE…How long did it last?

  10. What year was it 245 yrs before 5678 BCE?

  11. Closure-Practice Problems • 1. How many years ago was the year 3467 B.C. • 2. How many years did the Barno empire last, if it began in 356 B.C. and ended in 123 BCE? • 3. How many years ago was the year A.D. 1555? • 4. What year was it 589 years before 2344 BCE?

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