unit3computers教案

1、Unit 3 ComputersI.单元教学目标技能目标Skill GoalsTalk about information technology and robotsRead about the history and basic knowledge of computersPractice making decisionsListen to a text about information technologyWrite a passage about an androidStudy The Present Perfect Passive VoiceII.目标语言功 能 句 式Making

2、decisionsThe advantage / disadvantage isthink / don t think thatWhat s your reasonWhat makes you think so think because (of) believe thatagree / don t agree because ve decided that As / Since , I think 词汇1 .四会词汇solve, explore, anyhow, human race, signal, goal, type, arise, electronic2 .认读词汇calculate

3、, universal, simplify, sum, operator, logical, logically,technology, technological, revolution, artificial, intelligence,ntelligent, reality, personal, personally, tube, total, totally,network, web, application, finance, mobile, rocket, happiness, download, virus, coach, appearance, character, mop,

4、niece, abacus,calculator, PC, laptop, PDA, analytical, mathematical, designer, transistor, chip, Mars, programmer, android, teammate, naughty, spoil3.词组romon, go by, as a result, sothat , in a way, with the helpof, deal with, watch over结陶The Present Perfect Passive Voice重占八、句子1. Over time my memoryh

5、as developed so muchthat, like an elephant, I neverforget anything I have been told!2. And my memory became so large that even Icouldn t believe it!3. As time had gone by, I have been made smaller and smaller.4. I have been used in offices and homes since the 1970s.5. Since the 1970s many new applic

6、ations have been found for me.6. I have also been put into robots and used to make mobile phones as well as help with medical operations.7. I have even been put into space rockets and sent to explore the Moon and Mars.III.教材分析与教材重组1.教材分析本单元以computers为话题，旨在通过单元教学，综合听、说、读、写等多种形式，使学生了解计算机和信息技术的产生和发展过程及

7、其在我们的学习、工作、娱乐等生活中所起的重要作用，激发学生对信息技术的兴趣。Warming up提供几幅与计算机有关的图片，形象地说明了计算机的发展历程，并用三个问题引发学生对这一话题的思考，从而起到热身的作用。Pre-reading根据文章内容预设问题，检查学生对 computers相关知识及应用的了解。学生对computers的了解可能参差不齐，这更能激发学生想获取更多 知识的欲望，从而引出下面的阅读文章一一 WHO AM JReading 中以别致的标题 WHOAMI 引起学生的好奇心，使学生迫不急待地阅读这篇文章，并判断出“ I ”是computer ，从而对文章的内容印象更深刻。文章

8、以第一人称的形式按时间先后顺序讲述了 computers 的产生、发展和现状，并用拟人化的口吻表达了 computers 乐于为人类服务的精神。Comprehending 1 通过 scanning 的方式完成反映计算机发展历程的时间进程； 2 通过填表的形式帮助学生宏观梳理文章结构， 找出每个段落的主题句 (论点) 及具体的支持性论据； 3 是读后讨论， 要求学生结合自己的生活实际讨论计算机如何改变了我们的生活。Learning about language 分 词 汇 ( Discovering useful words and expressions ) 和语法 ( Discoverin

9、g useful structures ) 两大部分。 Discovering useful words and expressions 1 根据单词释义写出相对应的词汇，考查学生对WHO AM I文章中的重要词汇及短语的理解。2是以对短文填词完型的形式考查学生对几个重点词汇在篇章中的运用。 3 以 personalize 的形式练习几个表时间状语的短语的用法。 Discovering useful structures 是学习现在完成时的被动语态。 1 是让学生根据例子提示在WHOAMI 文章中找出两个含有现在完成时的被动语态的句子， 初步了解这一时态的形式。 2 是根据例句提示把所给的现在

10、完成时句子变为被动语态。 3 通过欣赏一首小诗进一步理解现在完成时的被动语态 的用法。Using language 从听、说、读、写四个部分强化学生的语言应用能力。Listening and Speaking 以“信息技术”为子话题展开听说活动。说的活动主要是就信息技术各种形式的优势和劣势展开讨论，并用所给的表reasoning 的功能项目展开讨论，决定哪种类型是最有用的。 Reading, speaking and writing以“芯片”为子话题展开读、说和写的活动。阅读文章介绍了叫一个叫AndW勺机器人的故事， 故事以第一人称的拟人话手法来写， 说明了计算机芯片在机器人领域的应用。1根据

11、文章内容完成AndW勺个人简历，检验学生对一些具体信息的掌握。 2 激发学生的想象力， 让他们设计出自己的机器人， 并能用简历的形式描述。 3 是写作任务， 学生根据所给范文和2中的 notes 写篇文章， 介绍自己设计的机器人。LISTENING 材料的话题衔接Reading, speaking and writing 的话题，介绍 了三个不同的机器人。 1 听前预测。 2 听大意。 3 听细节完成表格。TALKING艮据假设情境在听力的基础上展开讨论，讨论每个机器人的优势和劣势，最终做出决定并给出理由，同时也是对前面所学的功能项目的复习应用。USING WORDS AND EXPRESS通

12、NS&种形式练习本单元的重点词汇和短语。USING STRUCTURES了各种活动练习巩固本单元的语法项目。LSITENING TAS也是以机器人为话题，从机器人的权利这一角度展开听力活动，引发学生思考机器人和人类的异同点及机器人应该拥有的权利。READINGTASK 阅读材料介绍了一种未来机器人体育机器人，文章为科幻类型，预测了机器人发展的前景。SPEAKINGTASI#任务型活动，紧接着READINGASK勺话题，让学生运用想象力俩俩结对做一个针对体育机器人的采访，为校报准备新闻素材。WRITINGTASKISPEAKINGASK勺书面输出活动，根据采访活动内容和范文结构提示写篇采访稿。2

13、. 教材重组斗等Warmingup、 Pre-reading 、 Reading和 Comprehending合在起，上 节“精读课”。将 Learning about Language 和 Workbook 中 的 USING WORDSAND EXPRESSIONSUSING STRUCTURES为一节“语言学习课”。将Using language 中的Listening and Speaking 设计为节 “听说课”。将Using language 中的 Reading, speaking and writing 及 Workbook中的 LISTENIN住口TALKIN喋合为一节“综合

14、技能课（一）”。将Workboo坤的 LISENINGTASK READINGASK SPEAKINGASKZ及 WRITING TAS嚓合为另一节“综合技能课（二）”。3. 课型设计与课时分配 （经教材分析，根据学情，本单元可以用五课时教完）1st PeriodIntensive reading2ndPeriodLanguage study3rdPeriodListening and Speaking4thPeriodIntegrative skills （I）5th Period Integrative skills (II)V. 分课时教案The First Period Intensi

15、ve ReadingTeaching goals 教学目标1. Target language 目标语言a. 重点词汇和短语simplify logically technological revolution solve from on personalas a result totally so that network Web application explore anyhow human raceb. 重点句子Over time mymemoryhas developed so muchthat, like an elephant, I never forget anything I

16、 have been told!And my memory became so large that even I couldn t believe it!2. Ability goals 能力目标Enable students to learn about the development and history of computers.3. Learning ability goals 学能目标By finishing the timeline and the chart, help students grasp the basic structure and main idea of t

17、he passage.Teaching important and difficult points 教学重难点Understand how details are used to support topic sentences.Teaching methods 教学方法Prediction, scanning and discussion.Teaching aids 教具准备Projector and tape recorder.Teaching procedures & ways 教学过程与方式Step I Warming-upT: How many of you have compute

18、rs in your home Please put up your hands.Ss respond accordingly.T: What do you usually do on your computersSs: Type documents/homework, listen to music, watch videos, play games,search on the Internet, send mails T: When I were at your age, I knew nothing about computers. Most Chinese families never

19、 heard about it. However, in recent years, computers have become moreand more popular, and most families in cities have one or more than one computer in their home. And some families in villages also have their own computers. Computers makelife more convenient and colorful. However, it took a long t

20、ime for humans to have computers that we see today. Nowlook at the pictures on page 17 and discuss what they have in common. Then think about Questions 2 & 3.Suggested answers:1. These pictures are all technological inventions.2. From these pictures, we know computers have experienced a long develop

21、ment process, and the development will never stop.3. (There may be various answers.)Step II Pre-readingPredictionLet students predict the content of the passage according to the pictures and the title. This will involve students in active thinking and exploring.Then let them make a list of the ways

22、computers are used today.Sample list:date processing industrial design learning and teaching aids TV program editing entertainment (watch TV/video, listen to music, play games, online chat )communication (e-mail, e-card, instant message)T: Now look at the inventions in activity 3. First check their

23、meaningsin your dictionaries. Then put them in the order according to the time when they appeared.Help students understand the meanings of the words: analytical, calculate and universal .Note:Universal machine is also known as Alan Turingsuniversal computingmachine , iscapable of computing any algor

24、ithm.Students mayhave different answers. They will check it after reading the passage.T: Have you put them in the right order You will find it after reading the passage. Now turn to page 18 please.Step III ReadingSkimmingGet students read the whole passage and try to get the main idea of it.After re

25、adingT: What does I in the title refer toSs: Computer.T: What is the main idea of the passageSs: The passage is mainly about the history and development of computers. ScanningT: Correct! Now read the passage and finish the timeline. With this timeline, you will have a clear idea of the development o

26、f computer.Check the answers.T: The passage has three paragraphs. Find out the topic sentence of eachparagraph, and the details that are used to support the topic sentences.Then complete the chart in activity 2.Suggested answers:Para. 1Para. 2Para. 3Topic sentenceOver time I have changed quite a lot

27、.These changes only became possible as my memory improved.Since the 1970smany new applications have been found for me.SupportingdetailsCaculating machineAnalytical machine Universal machine PC LaptopTubesTransistorsChipsNetworkWebCommunicationFinanceTradeRobotsMobile phonesMedical operationsSpace ro

28、cketsT: From this chart, you will know the basic structure of this passage.As you mayhave found the topic sentences are not standing there alone, they are supported with details and date, which makethe topic sentences more convincing. Now I will play the tape of this passage. Listen and find out/und

29、erline the difficult words and expressions.Teacher gives some explanations.T: What can be “overtime replaced bySs: As time goes by.T: How do you understand the word simplify Look! (on the board: simple+-ify ). -ify is a suffix which meansto turn into, makeor become. For example, beautify. So if you

30、know the meaning of“simple ” , youcan easily get the meaning of simplify ” . Whocan tell meits meaningS: To make something easier or less complicated.T: What does “it ” in line 9 refer toSs: It refers to the fact that computer was programmedby an operator who used cards with holes.T: Why was Alan Tu

31、ring called computer s real fatherS: I guess that s because Alan madecomputer more powerful, which could solve any difficult mathematical problem.T: What does “this reality in line 15 refer toS: It refers to the reality that computer had grown as large as a room.T: In paragraph two, there are two se

32、ntences which contain the use of“sothat structure. Underline them and study carefully.Show the following on the screen/board:Over time my memory has developed so much that , like an elephant, I never forget anything I have been told!And my memory became so large that even I couldn t believe it!Help

33、students sum up the form and function of this structure:Form: so + adj./adv. + that + clauseFunction: This structure is used when emphasizing the degree or amount of something by saying what the result is.Step IV DiscussionDeal with activity 3 on page 19. Let students discuss how computers have chan

34、gedour livesSample discussion:51: I think it s impossible to live without computers!52: What makes you say that My grandparents didn t use a computer and they were still able to entertain themselves, to operate big machines, to analyze data, to make robots and so on.53: You are right. But computers

35、do change the way we live. They changethe way we learn by providing distance-learning programs. They change the way we communicate with the use of e-mail and instant messenger.They change the way we obtain information with Internet search engine such as Google and Baidu. They change the way we deal

36、with documents and pictures.54: I agree. Can you imagine what our life would be like If we could not use computers any more55: Wewould go back to the world wheneverything goes slowly. For example, send mails via train or air plane, which takes several days or even long; go to libraries to search for

37、 information, where limited informationare provided; spend long time to solve difficultmathematical problems etc. And on the other hand, we mayhave more time for outdoor activities instead of spending much time on computer.56: Yes, computers changed our lives both in a good way and in a bad way. It

38、depends on how we make use of it. I hope we can make good use if it.T: Do you want to see how cyber friends answer this question Look at the screen.Show the following on the screen or let students visit the web page:(One the screen)User 1Computers have made it easier for us to access a wealth of inf

39、ormationand have all but rendered printer encyclopedias obsolete. They have also madeit easier and cheaper to advertise our business anywhere we wish and do business with anyone anywhere in the world. On the downside however, computers have also madeit easier for sexual predators to find victims, fo

40、r criminals to steal our hard-earned money, and to even steal our identity, something nearly unheard of just a few decades ago. Also, children are more likely to sit in front of a computer and chat when they could just as easily speak with their friends on a telephone or go outside and play like chi

41、ldren used to before the computer revolution. As with any new technology, there are good and bad points, but in the end the general public through their actions will determine whether or not computers have actually improved our lives.User 2Of course! They have changed the way we shop, play, chat, wo

42、rk and more.User 3They have made us a lazy generation.User 4A computer has changed my life certainly even still at a very young age.Its fulfilled my dreams, knowledge and much more. For some its gainedthem employment and giving others something to do. Its opened a newworld of gaming, chatting and fi

43、nding advice and information. I COULDNT LIVE WITHOUT ONE!User 5Well, they madeour lives easier, the madeus lazier and they gave us the chance tohave some adventure when we are bored.User 6Majority of addicted computer users lack real life social skills these days.User 7They hurt my eyes.User 8Comput

44、ers change our attitudes, the way we live, the way we express ourselves, the way we are too others, views on life, views overall, how we dress, what we listen too, what we think of one another, how we work, interests. Basically everything without computers we wouldn t have the internet and like news

45、papers radios magazines and television we get these all on the internet. These change howwe are so basically everything about it. Also we get addicted and learn about things that maybewe shouldn t. Also can get into trouble . downloading, piracy all done with a computer. Goodthings are that computer

46、s have helped reach forward into the future. Helps with technology, education and will help the future generations.Soon everyt hing will be run by computers the good thing for us is we don t have to lift a finger the bad thing is will computers take over.Step V Homework (retelling)T: Suppose you wor

47、k for an information technology magazine. Write a short passage which briefly introduces the history and development of computers. Don t write in the first person.The Second Period Language study Teaching goals 教学目标1. Target language 目标语言a. 重点词汇和短语revolution network simplify sum mobile solve explore

48、 totally anyhow finance artificial technology intelligent application Web reality logicallyb. 重点句子As time had gone by, I have been made smaller and smaller.I have been used in offices and homes since the 1970s.Over time mymemoryhas developed so muchthat, like an elephant, I never forget anything I h

49、ave been told!Since the 1970s many new applications have been found for me.I have also been put into robots and used to make mobile phones as well as help with medical operations.I have even been put into space rockets and sent to explore the Moon and Mars.2. Ability goals 能力目标Enable students to lea

50、rn the meanings and use of some key words in the reading passage.Enable students to learn the form and function of present perfect passive voice.3. Learning ability goals 学能目标By writing a poemusing present perfect passive voice, enable students to use the structure freely and creatively.Teaching imp

51、ortant and difficult points 教学重难点How to change the sentences into the present perfect passive voice.Teaching methods 教学方法Personalization, Induction and imitation.Teaching aids 教具准备Projector and tape recorder.Teaching procedures & ways 教学过程与方式Step I RevisionCheck the homework. Ask two students to rea

52、d the passage they have written.Their passage should be brief and include the key information or facts about the development of computers.Step II Discovering useful words and expressionsT: Look at activity 1. These are the meanings of somewords or expressions in the text we learned yesterday. Find o

53、ut these words or expressions.Check the answers.T: Now look at the words in activity 2. Do you know their meanings Check their meanings in your dictionaries. Then complete the passage with the words.Check the answers.T: Nowactivity 3. Look at the phrases in bold in the story. What do theyhave in com

54、monS: They are all time phrases except “ as a result ” . They are used in the passage to indicate the development of the story. From them, we get a clear timeline of the story.T: Correct! Now use these phrases to create one of your own stories. The story can be a real one or an imaginary one.After t

55、hey finish writing, let students exchange their stories and proofread for eachother.Step III Discovering useful structuresLet students find sentences in the present perfect passive voice in the text and thenanalyze their form and function. (Activity 1 on page 21.)Students may find the following sent

56、ences:1. I have been used in offices and homes since the 1970s.2. Over time my memory has developed so much that, like an elephant, I never forget anything I have been told!3. Since the 1970s many new applications have been found for me.4. I have also been put into robots and used to make mobile pho

57、nes as well as help with medical operations.5. I have even been put into space rockets and sent to explore the Moon and Mars.Then let students study these sentences carefully and sum up the form of presentperfect passive voice tense.Elicit the structure:S + have/has + been + V-ed6. Whyis the passive voice used here Whendo we usually use passive voiceSs:T: The passive voice is used when the subject of a sentence is the person or thing affected by the action o