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Understand timelines with terms BC, BCE, AD, CE. Learn to calculate years left to right, add or subtract when dates cross epochs. Create a personal life timeline for better grasp.
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Understanding Timelines • Which way do we go ? Left to Right
What do the terms mean? BC-DC? AD-CD?
The terms have been changed!!! • BC is now BCE which means Before the Common Era • AD is now CE which means ????????? • Common Era
How Old are You? CALCULATING TIME 1 BCE CE There is no zero on this number line.
THINGS TO REMEMBER ABOUT TIME LINES: • ARE READ LEFT TO RIGHT • ADD WHEN DATES ARE ON BOTH SIDES BCE and CE • SUBTRACT WHEN DATES ARE ON ONE SIDE ONLY
IF SOMEONE WAS BORN IN 225 BCE, HOW OLD WOULD THEY BE IN 200 BCE? • IF SOMEONE WAS BORN IN 2 BCE, HOW OLD WOULD THEY BE IN 55 CE?