1. AKA (Also Known As) B.C. and A.D.
B.C.E. and C.E.
AKA (Also Known As)
B.C. and A.D.

2. What is B.C.E. and C.E.? B.C.E. = Before Common Era C.E. = Common Era
It’s a timeline
Determines years and dates

3. What is BC and AD? BC = Before Christ AD = Anno Domini
(Latin for “In the Year of Our Lord)
Who’s ‘Lord’?

4. Why are we in the Year 2019?
The standard calendar we use today around the world is the Christian calendar
Also called the “Gregorian Calendar”
So, Year 0 (or 1) is the birth of Christ, the beginning of Christianity
We use 1 calendar internationally to AVOID CONFUSION
Are there other calendars besides this one?

5. Many other Calendars! Chinese Calendar Islamic Calendar
Buddhist Calendar
Hebrew (Jewish) Calendar
Egyptian Calendar
Babylonian Calendar
Hindu Calendar
Ethiopian Calendar
Mayan Calendar
Many others!
Some in still in use today, others are not

7. Remember!
BCE = BC
CE = AD
They are the same thing!!

8. What about B.C. and A.D.? Why don’t we just use BC and AD?
You can, but most historians don’t.
Saying AD is saying that Jesus Christ is your Lord.
AD means “In the Year of Our Lord”
Not everyone is Christian (especially historians)

9. Timeline Same As Number Line
BCE = Negative numbers
CE = Positive numbers
CE starts at Year 0 (or 1)
For example:
100 BCE is the same as -100
100 CE is the same as +100
How many years are between 100 BCE and 100 CE?
Find the range

10. Calculate 5000 BCE and 2000 CE 3000 BCE and 500 BCE
How many years are between:
5000 BCE and 2000 CE
3000 BCE and 500 BCE
1300 CE and 2000 CE
1492 BCE and 1754 CE
8000 BCE to today
Which date came first?
313 BCE
315 BCE
309 BCE
320 CE