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Science
The invention of mobile phones

• I can look for information on the invention of mobile phones.

In the 1970s, scientists in the USA started to find a new kind of
phone that could be used anywhere. In 1871, the first telephone,
which was invented by Graham Bell, changed the way of communication.
Thanks to telephones, people could make phone calls and talk to
each other over a long distance. However, people could only use
telephones in the telephone booths on the street. Users could not
bring the telephones with them. Therefore, scientists wanted to find
a machine that people could bring with them everywhere.

In 1973, Martin Cooper made the first phone call from a mobile phone. This first mobile phone was
1.1 kilograms heavy and 23 centimetres long. Nowadays, mobile phones are much smaller with
a lot of incredible functions such as taking photos or surfing the Internet. However, the appearance
of the first mobile phone is still one of the most important events in communication history.

Read and listen. Answer the questions.
2.25
1 When was the first telephone invented?
2 What was the problem with the telephones?
3 How big was the first mobile phone?

Work in groups.
INTERFACE
th
Use there was/ there were and the ideas below to talk about life in Vietnam in the 19 century.

no phones no Internet fewer people
narrow streets small houses no cars
Victoria Education and Training JSC − victoria.vn−

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