unit3Computers-Reading公开课.ppt

1、Unit 3 Computers,Reading,Guessing game,Guess!,A toy?,A handbag?,Computers,I am very old now. I was born in China. Many people used me for calculating in the past, but now I am a bit lonely because they dont like me now. Do you know who I am?,abacus,Guess more:,I am very small. I can be used for calc

2、ulating. In China, a lot of students use me when solving mathematical problems. Do you know who I am?,calculator,I can be used for calculating. Besides, I can also be used for watching DVD, sending e-mail and communicating through the Internet. However, I am not a PC, because Im small enough for you

3、 to take me with you.,notebook computer/ laptop,Do you know who I am?,What do you know about computers?,Brain storm,shapes,parts,sizes,colors,kinds,drives,monitor,keyboard,main unit,mouse,speakers,Do you know them?,CD-ROMs,work for us in Mars(火星),Whats next?,carry things,work in wars (战斗),仿真机器人,ente

4、rtainment 娱乐,What do you think will be the next development?,Who am I?,Reading,1.In the passage, “I” refers to _. 2.the topic sentence of each paragraph. Paragraph I: paragraphII: paragraphIII: So the whole passage is mainly about: _.,I.Scanning(略读),a computer,Over time I have been changed quite a l

5、ot.,These changes only became possible as my memory improved.,Since the 1970s many new applications have been found for me.,Fast-reading,the development of computers.,Read the passage and choose the best answers. 1.What can we learn from the text? A Computer has a short history. B No one knows compu

6、ter when the first computer was made. C Computers are not widely used even today. D Computers are widely used. 2. Who was the computers real father? A Alan Turning B Not mentioned in the text. C Bill Gates D Charles Babbage 3 .The computer almost changed completely _. A in 1642 B in 1882 C in the 19

7、60s D in the 1970s,D,A,C,The computer _ _ _ _ machine,1822,Alan Turing _ _ _ _ _ how computers could be made to work,Computers had _ _ _ _ a room.,1960s,First as _ _and then _ _ _ computers were used in offices and homes.,Computers connect people all over the world together.,A family of computers wa

8、s connected by a network.,The _ machine was made by Charles Babbage.,began as a calculating,analytical,wrote a book to describe,grown as large as,a PC as a laptop,analytical,universal,mathematical problems,transistors,communication,trade,applications,medical operations,strong,small,wide,What are the

9、 advantages and disadvantages of the computers? In my opinion,I can use the computer to.,Discussion,We can use the computer to.,listen to music,Watch movies,search for ,communicate with,do shopping,Advantages We can use the compuers to 1. use a computer for school work 2. play games on the computer

10、3. send emails to friends 4. download music and films 5. go shopping on line 6. use QQ to make friends 7. communicate with others,8. use the Internet to search for information 9. surf the web for fun 10. read news both at home and abroad, read books and magazines,Disadvantages Some students may get

11、too addicted (沉溺于)to it . Some students waste too much time in playing computer games. Some students spend too much time in chatting with others and may be cheated (欺骗)by someone on line. As a result, they have little time to study It is bad for our eyes and health to spend long time in front of computers.,Homework:,Read the passage fluently. 2. Do Ex on period 2. 3. Retell the passage .,Goodbye!,http:/www.99dyw.co/ 九九电影网 http:/www.99dyw.tv/ 九九电影网 九九电影网 www.youhuijuan.co 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂