1、 Unit 3 Computers Period 1 Warming upThe whole class will be divided into four groups ,and each group send a student to stand before the platform , who guess what the object is and the rest of the group mates can only do some movements to let his or her group representative guess what the object is

2、and the group mates who guess the object must use the following expressions:I am a machine which is a good helper in doing house work. I wash clothes for people. Who am I ? Who am I ?Riddles(謎語謎語):washing machine A machine that you use to talk to other people even in a far-away place. We are connect

3、ed by wire or radio. Now each of us often has a number. Who am I ? Who am I ?Riddles(謎語謎語):telephoneWith this you can watch different programmers just at home. Im a machine that has a screen with moving pictures and sounds. But watching me too much is bad for your eyes. Who am I ? Who am I ?Riddles(

4、謎語謎語):TV set 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. Who am I ? Who am I ?abacusRiddles(謎語謎語): I am very small. I can be used for calculating. In China, a lot of students use me when solving mat

5、hematical problems. Who am I? Who am I?calculatorRiddles(謎語謎語): 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 to take me with you.notebook computerWho am I ?W

6、ho am I ?Riddles(謎語謎語):DiscussionDiscussionIs it very important to learn computer skills for us? Why or why not?Use the following expression in your discussion.I think that In my opinion I believe that Whats your reason?Why do you think so?ScannerScannerPrinterPrinterMonitorMonitorFloppy Floppy Disk

7、DiskMouseMouseSpeakerSpeakerGive the English name of the following pictures of the computer components (組件組件)What is it in English?Main board(主板主板)What is it in English?CPU (central processing Unit)中央處理器中央處理器What is it in English?RAM (隨機存儲器隨機存儲器)(Random Access Memory )What is it in English?hard disc

8、硬盤硬盤What is it in English?Keyboard (鍵盤鍵盤)What is it in English?Power supply(電源電源)What is it in English?CRT display（Cathode Ray Tube陰陰極射線管）極射線管） 純平顯示器純平顯示器 What is it in English?mouse鼠標鼠標What is it in English?display card顯卡顯卡DVD ROMDigital Versatile Disc Read Only Memory 數字通用光盤數字通用光盤 What can we do o

9、n a computer and through the Internet?Computer and Internet type my homeworkdraw picturesplay gamescommunicate with my friends.gather information for my lessonslisten to musicwatch moviesTypingShoppingCalculatingTranslating Playing games CommunicatingSearching informationEditing multimedia documents

10、Nowadays, what does a computer mean to you?A useful machine?A wise expert?A close friend?You can use these expressions in your presentation: I think that I think that In my opinion In my opinion I believe that I believe that I agree / disagree because I agree / disagree because Computers have great

11、power. They make our lives more colorful and more convenient. BUT Dont forget that computers are modern tools which cant take the place of real people. Never ignore the people beside you or even far away. common adj. 普通的普通的,共同的共同的,常見的常見的in common共同的共同的,共有的共有的,共用的共用的have nothing in commonhave little in commonhave something in commonhave a lot in commonYou