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1、课题名： Unit 3 Module 2 Warming up and Pre-reading,Unit 3,Period 1 Warming up & pre-reading,Objects today,Tell the name of computer components and their usage. Know the development of computers. Comparison among abacus, calculator, PC and PDA,keyboard,mouse,monitor,screen,speaker,host computer,How much
2、 do you know about a computer?,Try to name each part of a computer.,Main board(主板),some other computer components,CPU (central processing Unit) (中央处理器),hard disc (硬盘),DVD ROM (Digital Video Disc-Read Only Memory) (数字视盘),monitor screen mouse keyboard hard disk DVD-ROM,(1) the part of the computer tha
3、t looks like a television. (2) the part of the monitor that you look at. (3) something you use to click on things. (files, etc.) (4) the part of the computer that you type on. (5) the part of a computer that stores information. (6) The part of computer that we can put a CD in.,Work out the names,Wha
4、t can computers be used to do?,How do you use your computer?,yes,no,Discuss with your partners about this question and then write your thoughts down on a piece of paper.,The history of the computer,a huge computer,Whats next?,abacus,calculator,PC,laptop,PDA,comparison,1. What do they have in common?
5、 2. Whats your favorite- abacus, calculator or computer? Discuss the advantages and disadvantages among them.,1. What do they have in common?,As far as Im concerned/In my opinion/I believe that They can be used for calculating. They can deal with math problems. They are useful and helpful. ,2. The a
6、dvantages and disadvantages.,Abacus Advantages: fast, traditional , convenient, simple Disadvantages: too simple Calculator Advantages: accurate, convenient, convenient to carry, more useful, has more functions, like cos, sin, log, etc Disadvantages: people will rely on it too much,PC Advantages: pe
7、rsonal, popular, faster, intelligent ,more useful functional, (surfing the Internet, looking for information, draw pictures) Disadvantages: too big to carry , expensive, skillful (it requires people should know how to use a computer),PDA Advantages: compact(小巧的), useful, portable(轻便的,方便携带的), convenient to carry Disadvantages: the screen is too small, it needs battery(电池), easy to lose data(数据),Preview the reading WHO AM I? Underline the puzzles in the reading part.,Thanks for listening!,参考引用资料来源：中学学科网相关资料,