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Warm-Up. Copy HW Start page 15 of your notebook b y explaining how historians keep track of time. Organizing Time. Historians divide time in to ____________ or _____________. 10 yrs.=______________________ 100yrs.=______________________ 1000 yrs.=________________________. Calendars.
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Warm-Up Copy HW Start page 15 of your notebook by explaining how historians keep track of time
Organizing Time • Historians divide time in to ____________ or _____________. • 10 yrs.=______________________ • 100yrs.=______________________ • 1000 yrs.=________________________
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
If the Barno Empire began in 546BCE and ended in 123 BCE…How long did it last?
If the Barno Empire started in 345 BCE and ended in 780 CE…How long did it last?
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?