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4 What is called a living computer?
Ancient numbers
Greek Numerals (希腊数字)
Roman Numerals (罗马数字)
Ancient numbers
Chinese Numerals (中国数字)
Ancient numbers
Egyptian Numerals (埃及数字)
Ancient numbers
Task 1: Are ancient numbers the same?
China
Greece
Rome
Egypt
in different ways
_____in the same way
in tens
count
Task 2 : Find the smallest and the biggest numbers
Who invented and developed 1-9 system of numbers?
Why is zero very important?
It made it easier to write big numbers and to calculate.
The Indians
1
Mr Li:
May:
Mr Li:
Everyone knows it.
Knows what?
The ___language___ of __numbers__.