必修二Unit3-computers-reading课件--公开课课件

1、必修二Unit3-computers-reading课 件-公开课课件 Unit 3 Computers 必修二Unit3-computers-reading课 件-公开课课件 1. To learn about something about computers. 2. Reading and understanding, catching the history and information of the passage“who am I ?”. 3.Functional item, how to tell the history about the computer. Learning

2、 Aims 必修二Unit3-computers-reading课 件-公开课课件 With the development of science With the development of science and technology, many new things and technology, many new things appear in human beings life. Lets appear in human beings life. Lets guess what they are:guess what they are: Warming upGuessing ga

3、meWarming upGuessing game 必修二Unit3-computers-reading课 件-公开课课件 I am a machine which moves very fast on four wheels. You need a license(执照执照) and must be very careful when you drive me. QQ,BYD, Benz and BMW are some famous kinds of me. Who am I? Warming upGuessing gameWarming upGuessing game 必修二Unit3-

4、computers-reading课 件-公开课课件 I am a machine that you use to I am a machine that you use to talk to talk to other other people even in a far-away place. I am people even in a far-away place. I am connected by wire or radio. Now each of us connected by wire or radio. Now each of us often has a often has

5、 a numbernumber. Who am I?. Who am I? Warming upGuessing gameWarming upGuessing game 必修二Unit3-computers-reading课 件-公开课课件 I am very old now. I was born in China. Many I am very old now. I was born in China. Many people used me for people used me for calculatingcalculating in the pastin the past, but

6、, but now I am a bit lonely because they dont like me now I am a bit lonely because they dont like me now. Do you know who I am?now. Do you know who I am? Warming upGuessing gameWarming upGuessing game 必修二Unit3-computers-reading课 件-公开课课件 I am very small. I can be used for I am very small. I can be u

7、sed for calculatingcalculating. In . In China, a lot of students use me when solving China, a lot of students use me when solving mathematical problemsmathematical problems. Do you know who I am?. Do you know who I am? Warming upGuessing gameWarming upGuessing game 必修二Unit3-computers-reading课件 -公开课课

8、件 I can be used for calculating. Besides, I can also be used to to typetype your homework, draw your homework, draw pictures, play games, watch movies, listen to pictures, play games, watch movies, listen to music, communicate with your friends, music, communicate with your friends, gather informati

9、onWho am I? gather informationWho am I? Warming upGuessing gameWarming upGuessing game 必修二Unit3-computers-reading课件 -公开课课件 Can you tell the development of computers? What do they have in common? abacus calculator huge computer PC laptop PDA robot Whats next?Whats next? 必修二Unit3-computers-reading课件 -

10、公开课课件 What do you think will be the next development of computers? virtual keyboards 虚拟键盘虚拟键盘 必修二Unit3-computers-reading课件 -公开课课件 carry things 必修二Unit3-computers-reading课件 -公开课课件 do space research 必修二Unit3-computers-reading课件-公开课课件 keyboard 键盘键盘 mouse 鼠鼠 标标 monitor 显示显示 器器 screen 屏幕屏幕 speaker 音响音响 h

11、ost 主机主机 Components of a Computer Do you Do you know aboutknow about computers computers？ 必修二Unit3-computers-reading课件 -公开课课件 Guiding questions: We use computers almost everyday. We use computers almost everyday. But how much do we know about it?But how much do we know about it? When was the compute

12、r invented? What did it look like before? Who was the real father of computers? How did computers change through these years? 必修二Unit3-computers-reading课件 -公开课课件 Who am I ? 必修二Unit3-computers-reading课件 -公开课课件 1. Who is the speaker “I”in this story?“ I ” am a _ . 2. Whats the main idea of this passag

13、e? A. The development of computers. B. The development and the applications of computers. C. A machine which is simple-minded. D. Computers may replace human beings. computer 3. The text is written in an order of _ .time Skimming(Fast reading) 必修二Unit3-computers-reading课件 -公开课课件 The structure of the

14、 passageThe structure of the passage Task:Task: The passage has three paragraphs. Find out the topic sentence of each paragraph, and the details that are used to support the topic sentences. Then complete the chart in activity 2. What type of writing is it? expository writing 说明文 Tips: It often has

15、a clear structure, which makes it easy for us to find the answers to the questions. 2. Where can we usually find the topic sentence? The beginning of the passage. 必修二Unit3-computers-reading课 件-公开课课件 Para I: Para II: Para III: Who am I? Over time I have been changed quite a lot. These changes only be

16、came possible as my memory improved. Since the 1970s many new applications have been found out for me. Skim the passage and find out the topic sentence in each paragraph. (2 min) 必修二Unit3-computers-reading课 件-公开课课件 Paragraph 1 Topic sentence Over time I have been changed quite a lot. Supporting deta

17、ils 1 calculating machine 2 analytical machine 3 universal machine 4 PC 5 laptop 必修二Unit3-computers-reading课 件-公开课课件 Paragraph 2 Topic sentence These changes only became possible as my memory improved. Supporting details 1 tubes 2 transistors 3 chips 4 network 5 World Wide Web 必修二Unit3-computers-rea

18、ding课 件-公开课课件 Paragraph 3 Topic sentence Since the 1970s many new applications have been found for me. Supporting details 1 communications 2 finance 3 trade 4 robots 5 mobile phones 6 medical operations 7 space rockets 8 providing a life of high quality 必修二Unit3-computers-reading课 件-公开课课件 Read para

19、1 and and finish the timeline.and finish the timeline. (2 mins) Time Machine Applications In 1642A _ machine _difficult sums About in _ An analytical machine Think_ In 1936A _ machine Solve any difficult problem By the 1940sA larger machine_worried the designers _ Personal computer/ Laptop _ _ calcu

20、latingSimplify 1822logically universal Reality Since the 1970s Used in offices and homes 必修二Unit3-computers-reading课 件-公开课课件 My shape didnt change even though my memory improved. The older I am, the larger I have become. Over time I have large memory so that I will not forget anything I have been to

21、ld. I was able to share my knowledge with others through the World Wide Web in the early 1960s. F F T T The information was stored in tubes, then on transistors and later on the chips. As I have grown older I have also grown smaller. Read para 2 and then tell the statement true or false. (1 min) 1 2

22、 What roles do computers play in the life of human beings? What are the new applications of the computer? Read Para 3 and then answer the following questions. (1 min) 必修二Unit3-computers-reading课件-公开课课件 Many new applications have been found for me, such as communications finance/ trade/ robots/ mobil

23、e Rockets. phones/ medical operations/ space 1. Help with school work 2. Play games 3. Send or receive emails 4. Listen to music and watch films 5. Chat online 6. Search for information 7. Beautify photos 8. Online shopping What roles do computers play in the life of human beings? Bad for eyesBad fo

24、r eyes Children may be addicted to playing Children may be addicted to playing computer games. computer games. What bad influences may computers have on us? What bad influences may computers have on us? People become lazierPeople become lazier Increase the risk of being cheated by Increase the risk

25、of being cheated by online trapsonline traps Majority of addicted computer users Majority of addicted computer users lack real life social skills lack real life social skills 必修二Unit3-computers-reading课件-公开课课件 “低头族” Computer is a tool, not a toy.Computer is a tool, not a toy. 必修二Unit3-computers-read

26、ing课件-公开课课件 1. Who was the first person to make the earliest computer? A. Alan Turing. B. Charles Babbage. C. Charles Turing. D. Alan Babbage. 2. When was the “universal machine” built? A. In 1822. B. In 1642. C. In 1936. D. In 1970. Quiz Quiz 必修二Unit3-computers-reading课件-公开课课件 3. When was the compu

27、ter the biggest? A. In 1642. B. In 1936. C. In the 1940s. D. In the 1970s. 4. How old is the computer? A. About 170 years old. B. About 270 years old. C. About 370 years old D. About 470 years old. 必修二Unit3-computers-reading课件-公开课课件 5. Which of the following is in the right order of time? The comput

28、er was connected with other computers. b. Alan Turing wrote a book about the computer. c. The computer has been sent to explore the Moon and Mars. d. The computer began to simplify difficult sums. A. a. b. c. d. B. b. c. a. d. C. d. a. c. b. D. d. b. a. c. 必修二Unit3-computers-reading课件 -公开课课件 短文填空 Over time I have been changed a lot. I could