Vocabulary
Find another word that means"exchange"
barter
You_______(have to/has to)do your homework.
have to
Thousands of years ago,people didn't use money.
Thousands of years ago,people didn't use money.
What "CE" stands for?
Common Era
Find another word means"金属的"
metal
Bruce_______(have to/has to)do something to help your mom.
has to
Instead,people bartered for things they wanted.
Instead,people bartered for things they wanted.
when did Chinese start to use metal money?
Around 1000 BCE.
Can you use a word to describe something is very expansive?
valuable
Jack and Lucy_________(have to/has to)go home now.
have to
People started to use round metal money with holes in the middle.
People started to use round metal money with holes in the middle.
Where did the first paper money come from？
China.
Can you spell "信用卡"？
credit card
You________(have to)get up now because it's so early.
don't have to
Many countries made their own coins from valuable metals like silver and gold.
Many countries made their own coins from valuable metals like silver and gold.
When was the first credit card?
In 1958
what's the material of your chair?
Plastic
doesn't have to
European countries didn't start to use paper money widely until around 1600 CE.
European countries didn't start to use paper money widely until around 1600 CE.
what kind of money do people use in the 21st century?
Electronic money