Unit 3 Computers

(共41张PPT)
doe a deer a female deer ray a drop of golden sun me a name I call myself far a long long way to run sew a needle pulling thread la a note to follow sew tea a drink with jam and bread that will bring us back to do (Repeat*)
do-re-mi-fa-so-la-te do-so-do
Welcome to our easy English class
A laptop
An abacus
A huge computer
A calculator
A PC
If I were a maths teacher, which would help me most Why
I think …because…
I believe that…
In my opinion, …
…
How do you use computers and the Internet
3. send e-mails
4. listen to music
5. watch movies
9. learn computer skills
Yes
No
I often use a computer to…, I sometimes use it to…, and I never use it to…
1. type my homework
2. play computer games
6. chat (聊天)
7. search for information
8. do shopping
Computers have great power. They make our lives more colorful and more convenient(方便的 ) .
BUT
Don’t just use computers for fun.
Don’t spend too much time in playing computer games or chatting(聊天) online.
We should learn more computer skills(技能)which are very useful in our future work.
×
×
√
Unit 3 Computers
1. Who am I
Read the text fast and find out:
*I am _____________.
a computer
2. What is the main idea of the text
A. the early development of the computer
B. the late development of the computer
C. the important of the computer
D. the history and development of computers
history development
Fill in the timeline below.
1642 :
1822 : I was built as an analytical machine by Charles B.
:
1940s:
:
1970s:
Now :
I began as a calculating machine.
1936
I grew rapidly both in size and in brainpower.
I had grown as large as a room.
1960s
The first family of us was connected to each other.
I have been used in offices and homes.
I connect people all over the world.
Finish the chart below.
Paragraph1 Paragraph2 Paragrph3
Over time I have been changed quite a lot.
These changes only became possible as my memory improved.
Since the 1970s many new applications have been found for me.
calculating machine
Topic sentence
Supporting details
analytical machine
universal machine
PC
laptop
tubes
transistors
chips
network
W.W. W.
communication
finance
trade
robots
…
have been changed
have been found
F
F
T
T
F
True or False
1. In 1642 I began as a calculating machine
2. My real father was Charles Babbage, who
wrote a book and built me in 1936.
3. After I got my new transistors and small chips, I totally changed my shape.
4. Since the 1970s I have been used in offices
and homes
5. I am now truly filled with happiness that
I can replace the human race.
I could simplify difficult sums.
and could solve any mathematical problem.
Alan Turing
am a devoted friend and helper of the human race.
I began as a machine in 1642 in france. After two hundred years, I was built as an machine by Charles Babbage. In 1936 my real father, Alan Turing, wrote a book about how to make me work as a “ machine” to any difficult mathematical problem. As time went by, I was made smaller. Since the 1970s I have been used in offices and homes.
calculating
analytical
universal
solve
In early 1960s, I was given a family connected by a . So I was able to share my knowledge with others through the . I have become very important in communications, and trade.
I’m now truly filled with that I am a devoted friend and helper of the !
network
World Wide Web
finance
happiness
human race
Let’s interview the computer.
Work in groups of four.
Choose one student as Mr./Miss Computer,
and the other students as reporters.
1. Where were you in 1642
2. What happened to you in 1822
3. What were you called in 1936
4. What did you get in 1960s
5. What happened to you in 1970s
The reporters may ask the following questions:
Some other questions will be better.
Sample interview:
R1=Reporter1; R2=Reporter2; …;Mr./puter
R1: Hello, Mr./puter. We come to your time
to know more aboutyou. Can we ask you some questions
C: Of course you can. What would you like to know
R1:Where were you in 1642
C: …
R2: What happened to you in 1822
C: …
R3: What happened to you in 1970s
C: …
RS: Thank you for your time. Goodbye.
1. Where were you in 1642
2. What happened to you in 1822
3. What were you called in 1936
4. What did you look like in 1940s
5. What did you get in 1960s
6. What happened to you in 1970s
Read the text again and find out
the difficult language points..
2. Finish exercises 1 and 2
on page 20
Should high school students
surf the internet(上网)
I think we high school students should surf
the internet because…(first, second, third)
I don’t agree with you. In my opinion, it is
bad for students to… The reason is that…
I agree with you. I think we can also…
辩论
An abacus is an old calculating machine used in China until now.
A calculator is a new calculating machine which can solve a large number of mathematical problems.
A huge computer is the first electronic counting machine in Europe. It was built to solve some mathematical problems.But it was too big.
A PC is a personal computer which can solve all kinds of problems and is used widely now.
A laptop is a kind of useful computer which can be taken conveniently(便利地) like a notebook.
In 1960s the first family of computers was
connected by a network.
transistors
robot
wrote a book
universal machine
mathematical problem
Alan Turing
（1912-1954）
programmed
by an operator
used cards
with holds
logically
technological
revolution
artificial
intelligence
Charles Babbage （1791-1871）
In 1822, the analytical machine was made by Charles Babbage.