Unit 3 Computers

Warming up Guessing game

《英语学习辅导报》出品 With the development of science and technology, many new things appear in human being’s life. Let’s guess what they are: 《英语学习辅导报》出品

Who Am I 1. With me you can watch different programmes just at home. I’m a machine that has a screen with moving pictures and sounds. But watching me too much is bad for your eyes. TV set

2. I am a machine which moves very fast on four wheels 2. I am a machine which moves very fast on four wheels. You need a license(执照) and must be very careful when you drive me. Rolls Royce, Benz and BMW are some famous kinds of me. car

3. I am a machine which is a good helper in doing house work. I wash clothes for people. Who am I? washing machine

4. A machine that you use to talk to other people even in a far-away place. We are connected by wire or radio. Now each of us often has a number. Who am I? telephone

5.It is a machine, which you can use to type your homework, draw pictures, play games, watch movies, listen to music, communicate with your friends, gather information… Computer

Pre-reading What do you know abour computers ?

7 3 4 5 6 8 1 2 monitor screen host computer speaker keyboard mouse camera 7 monitor screen 3 4 host computer 5 6 speaker 8 1 2 Wireless controller keyboard mouse

New words and expressions 计算机器 分析机 穿孔卡 技术革命 通用机器 数学问题 人工智能 晶体管 存储容量 网络 万维网 calculating machine Analytical Machine card with holes technological revolution universal machine mathematical problems artificial intelligence transistor memory network World Wide Web

Task 1 Skimming 1. Who is the speaker in this story? A computer. 2. What’s the general idea of the passage? The passage is mainly about the history And development of computers. It is also about the relationship of computers and humans.

According to the time How did the writer organize the text? Third reading： How did the writer organize the text? According to the time

2.Fill in the blanks Timeline The computer began as a calculating machine 1642:_____________________________________ 1822:The Analytical Machine was made by Charles Babbage. _______:_______________________________ ___________________________ 1940s:_________________________________ _____: The first family of computers was connected to each other. 1970s:_________________________________ Now:_____________________________________ 1936 The computer grew rapidly both in size and in brainpower. The computer had grown as large as a room 1960s Computers were used in offices and homes Computers connect people all over the world together.

Charles Babbage invented an Analytical machine in 1822. 3. The passage mentiones two persons.Who are they ?Why are they mentioned? Charles Babbage invented an Analytical machine in 1822. Alan Turing, the computers’ real father,wrote a book about how the computer could be made to work as a “universal machine” to solve any difficult mathematical problem.

Charles Babbage MATHEMATICIAN （英国数学家）

Father of computer science Alan Turing

Scanning: Complete the chart. Paragraph1 Paragraph2 Paragraph3 Topic senten -ce Support-ing details calculating machine tubes communications finance Over time I have been changed quite a lot. These changes only … as my memory improved. Since the 1970s many new applications …for me. transistors analytical machine trade chips robots universal machine network mobile phones PC World Wide Web ----www medical operations laptop space robots

Competitong(ASK and Answer)

Q1: How did the computer work as an Analytical Machine? The computer “think” logically and produce an answer quickly by using cards with holes.

Q2: What makes the computer totally change his size? First tubes Then transistors At last chips.

Q3: In how many ways do we say the computer changed? What are they? Size: Intelligence: Speed: Function: People’ opinion: smaller cleverer quicker calculating…dealing with …, communicating with… clever & useful

Post-reading How did computers develop? Universal machine Calculating Analytical machine Internet Computer Artificial intelligence

Retell the passage: I began as a _________ _______ in 1642 in France. In 1822 I was built as an ________ _______. Then in 1936 Alan Turing wrote a book and built a _________ ______. As time___ ___, I was made ______ but my memory got ______ and _____. In the 1960s they gave me a family connected by__ ______. Now people call it the Internet. I was used in ______ and ______ in the 1970s. Since my birth I have truly been built to serve the human race. Retell the passage: calculating machine Analytical Machine universal machine went by smaller larger larger a network offices homes

Fill the blanks The text is about the history of _______ At first,the computer was used ______ a calculating machine And it was very ________. As the years have ____ ____ , computers have been made _____ ____ _______ (越来越小) and it has many new____________ .Now,people can use computers to ____ ________information and communicate ________(介词) each other around the world by the ________. computers as big gone by smaller and smaller applications deal with with Internet

Discussing What are the uses of computers in our daily life?

Do shopping Communication Medical operations Do business Control robots DO office work Education Entertainment Search information Control space rockets

Discussion Advantages and disadvantages of the computers.

Disadvantages Advantages we can communicate with friends listen to music see films & watch news play games do shopping save a lot of time do a lot of useful things Disadvantages Some people especially the teenagers abandon (沉迷于) themselves to the computer games and chatting on the Internet. As a result, they have little time to study . Some people use the computer wrongly.

Conclusion There is no doubt that the computer has two sides ,too. If we make good use of it, it will make our lives more colorful and convenient. But don’t lose yourself in playing computers. Just remember: Keep fit, study well and work hard.

What’s next? work for us in Mars(火星)

work in wars (战斗) carry things

仿真机器人 entertainment 娱乐 What do you think will be the next development?

Homework: Read & retell the text Bye-bye