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Timelines

Timelines. How many years is that?. Biennium Triennium Olympiad Decade Score Half a Century Century Millennium. How many years is that?. Biennium 2 years Triennium 3 years Olympiad 4 years Decade 10 years Score 20 years Half a Century 50 years Century 100 years

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Timelines

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  1. Timelines

  2. How many years is that? • Biennium • Triennium • Olympiad • Decade • Score • Half a Century • Century • Millennium

  3. How many years is that? • Biennium 2 years • Triennium 3 years • Olympiad 4 years • Decade 10 years • Score 20 years • Half a Century 50 years • Century 100 years • Millennium 1000 years

  4. Calendars • People have been calculating dates and time for thousands of years • Ancient people used the movement of planets to calculate time.

  5. Time • In ancient Rome they used the Julian calendar, which was based on the movement of the sun. • But there were problems… • The Julian calendar was off by 11 minutes. (1 day every 128 years) • In 1582, Pope Gregory introduced the Gregorian calendar. • 365 days per year; leap year every four years; irregular months • People were upset because it caused them to lose 12 days.

  6. Timelines • Historians measure time on graphs called timelines. • A timeline is an easy way to make sense of dates and events of the time. • It is a simple diagram that shows how dates and events relate to each other.

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  10. Timeline Abbreviations • In this class we will be looking at ancient history. • Ancient history usually falls along a timeline like the one below. 1500 BC 1000 BC 0 1000 AD 500 BC 500 AD 1500 AD

  11. Timeline Abbreviations • Ancient history begins in 3500 BC when writing is invented. • Ancient history ends around 500 AD when the Roman Empire falls and the Middle Ages begins. 1500 BC 1000 BC 0 1000 AD 500 BC 500 AD 1500 AD

  12. Timeline Abbreviations • What event happened on year 0? • What does BC stand for? • BC=Before Christ 1500 BC 1000 BC 0 1000 AD 500 BC 500 AD 1500 AD

  13. Timeline Abbreviations • What does AD stand for? • AD = Anno Domini • It is medieval Latin meaning In the Year of the Lord 1500 BC 1000 BC 0 1000 AD 500 BC 500 AD 1500 AD

  14. Timeline Abbreviations • Today instead of BC and AD we mostly use CE and BCE. • It is more considerate of historians and people of all religions. • BCE = Before the Common Era • CE = Common Era 1500 BCE 1000 BCE 0 1000 CE 500 BCE 500 CE 1500 CE

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