人教版英语必修2 unit 3 computer全单元新授课课件PPT.ppt

1、Unit3 Computer,Period1 Warming up & Reading,Lets play a guessing game!,Who am I?,Remember: They are all things that are used in our daily life.,Guess!,A toy?,A handbag?,Computers,abacus,Guess more:,I am very old now. I was born in China. Many people used me for calculating in the past,but now I am a

2、 bit lonely because they dont like me now. Do you know who I am?,calculator,I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems. Do you know who I am?,Mathematical problems:,33 + 89 =,23 x 13 =,299,122,Which is quicker,?,Then do you k

3、now anything that is much quicker than calculator?,?,Who Am I,Reading,1. Who is the speaker? 2. Whats the main idea of the text? A. The computer wants to find “who he is”. B. The functional change of the computer. C. The computer becomes popular around the world. D. The history of the computer.,Go t

4、hrough the passage quickly and answer the questions.,The computer.,Tell the history of computers,1642,1822,1940s,1960s,1970s,now,？,1936,Charles Babbage,size,brainpower,calculating machine,had grown as large as a room.,offices and homes.,network.,Paragraph 1,Paragraph 2,Paragraph 3,Over time I have b

5、een changed quite a lot.,These changes only became possible as my memory improved.,Since the 1970s many new applications have been found for me.,3rd Reading,A huge computer,A PC,the history of the computer,PDA / Palmtop,Internet,What other things can the computers do for us?,school work games emails

6、 music and films chat information photos shopping,Our life has changed!,Discussion,Should high school students surf the internet?,Open your mouth,I think that In my opinion I believe that ,Conclusion There is no doubt that computer has two sides, too. If we make good use of it, it will make our live

7、s more colourful and convenient. But dont lose yourself in playing computers. Just remember: Keep fit, study well and work hard.,Fashionable computers,A toy?,A handbag?,Computers,virtual keyboards 虚拟键盘,Nose-top keyboard-vest,Do you want to have your own computers? Whats your ideal(理想的) computers?,DIY,Lets do it!,Draw a picture of your ideal computer on the paper. And write down the descriptions(描绘) about the size, color, shape and functions of your computer and reasons.,Group work:,Useful expressions of report:,I think that In my opinion I believe that The color should be It looks like,T