人教版必修二第三单元教案(整理精校版)

篇一：高一英语必修2unit3教案教学目标教学重点(1)使学生了解计算机的发展历程，及其在当今社会的广泛运用；(2) 鼓励学生用英语表达自己的观点，进行简单的推理和做出决定。

教学难点(1) 教会学生通过时间的先后顺序来表达一件事；(2)让学生自己发现并感悟相关的语言规律，在学习过程中培养语感。

教学方法教具准备:多媒体一体机教学过程和方式step 1. leading-inpurpose: to activate the ss and arouse them to talk about the importance of 2. (1) to be used to calculate;(2) operate by human beings;(3) they are all artificial;2. a multi-function electronic device that can execute instructions to performa task.作业设计：教学回顾：班级时间序号缺席课时出席课型课题第二课时 reading教学目标教学重点(1) 使学生了解计算机的发展历程，及其在当今社会的广泛运用；(2) 使学生了和掌握现在完成时的被动语态的用法；(3) 鼓励学生用英语表达自己的观点，进行简单的推理和做出决定。

教学难点(1) 教会学生通过时间的先后顺序来表达一件事；(2)让使学生了和掌握现在完成时的被动语态的用法；（3）学生自己发现并感悟相关的语言规律，在学习过程中培养语感。

教学方法教具准备:a recorder,small blackboard教学过程和方式step 1 lead-instep 2 speakingtalk about the pictures in pairs or groups.step 3. reading1. skimmingpurpose: 1. to get a brief understanding of the text.2. to train the students’ listening ability.first, let ss skim the text and then listen to the recording of the text. pay attention to the pauses and pronunciation.2. scanningpurpose: to get ss to have some details in the text.3. further readingpurpose: to get ss to get more details about the text.1940s: ___________________________________________________1970s: ___________________________________________________step 4. retellpurpose: to have a deep understanding of the text.2. finish ex1 (p19), ex2 (p20).教学回顾：班级课时课型时间出席课题序号缺席第三课时language points教学目标3. to learn some sentence patterns.教学重点(2) some sentence patterns.教学难点(2)some sentence patterns.教学方法教学过程和方式2. analytical分析的3.technology 科技；技术4.calculate(v.)1) to use numbers to find out a total amount, distance, etc. 计算；核算5．go by : to pass 逝去，过去篇二：高中英语必修二第三单元reading教学设计12345篇三：人教版高中英语必修二第三单元教学设计《多媒体课件制作与使用技术》课题：the olympic games姓名： mia dong 学号： 17 专业：英语班级： 4 课程名称：多媒体课件制作与使用技术学期：2012至 2013学年第二学期人教版高中英语必修二第三单元《the olympic games》教学设计mia dong 外语系 4班 17一、学情分析（一）学习者分析1、一般特征：学生基本上来自农村，英语水平参差不齐，学习压力大；学习策略与方法不合理，有的学生还不喜欢英语。

Unit 3 Computer教课方案Period 1: Warming up and readingTeaching AimsTo talk about computerTo read about computerProceduresI. Warming upWarming up by talking about computerLook at the pictures on page 17. What are they? What do they havein common? Yes, they are computers. Then what is a computer?A computer is a machine which stores knowledge in its memory and does calculations on thatknowledge. This knowledge is stored in symbols; it is called data. A computer usually has a monitor toshow results. However, some computers can speak; these computers can be used for voice mail.计算机室A computer fr equently requires a boot device. The boot device contains the computer’ s operatin system and data. Computer programs can be installed onto a computer. Some people think thatcomputers are less useful if they do not have access to the Internet. They think this because theInternet allows the computers to send and receive data and email across the world.曙光 3000 巨型计算机A computer is now almost always an electronic device. It usually contains materials which are toxic;these materials will become toxic waste when disposed of. When a new computer is purchased insome places, laws require that the cost of its waste management must also be paid for. This is calledproduct stewardship.In some countries old computers are recycled (melted down) to get gold and other metals. This is dangerous, because this procedure releases the toxic waste into the water and soil.Computers become obsolete quickly. Very often they are given away and new ones replace themwithin two or three years. This makes the problem worse. Computer recycling is thus common. Manyprojects try to send working computers to developing nations so they can be re-used and willnot become waste as quickly.Computer jargon 计算机行话Computer jargon means words to do with computers and surrounding topics. Knowing what thesewords mean can help you know more about computers. Some people use these words to impressother people (Also known as buzzwords).Examples of jargon:Bit - The smallest data unit, can either be a“ 0.” or a“ 1.” .B yte - unit of data. See also Kilobyte, Megabyte, Gigabyte and NibbleCPU –Central Processing Unit, Another name for processorData - Information stored on a computerDisk - A place to store data.Email - Electronic mail.GHz - Gigahertz. Used often incorrectly to describe the speed of a processor. But with some 2.4 GHz processors faster than 3.6 GHz ones, it is clear that it is just a salesman trick.Load - Get data from a diskNibble - Half a ByteSave - Put data on a diskRAM –random-access memory(随机存取储存器), the more the better.USB - Universal Serial Bus（通用串行总线，一种简化了插接多种附件的薄型插座）WWW - World Wide Web, part of the InternetII. Pre-reading1.Questioning and answering---What do you know about computer?●E lectronic machine capable of performing calculations and other manipulations of varioustypes of data, under the control of a stored set of instructions. The machine itself is the hardware; the instructions are the program or software. Depending upon size, computers are called mainframes, minicomputers, and microcomputers. Microcomputers include desk-top and portable personal computers.●A multi-function electronic device that can execute instructions to perform a task.●A device that accepts information, processes it, andsupplies an output. A computer usuallycontains memory, a control unit, arithmetic and logical units, and a means for input and output.●a programmable hardware component that is controlled by internally stored programs and that can perform substantial computations (including arithmetic and logic operations) without human intervention. A computer typically consists of one or more processing units, memory units, and associated peripheral input and output devices.●R elated to automation and electronic data processing. The Library of Congress commonly classes most computer-related books in HF5548, QA75-76, Z52, T385, and some TK ranges.●a machine for performing calculations automaticallycalculator: an expert at calculation (or at operating calculating machines)●A computer is a device or machine for making calculations or controlling operations that are expressible in numerical or logical terms. Computers are constructed from components that perform simple well-defined functions. The complex interactions of these components endow computers with the ability to process information. If correctly configured (usually by, programming) a computer can be made to represent some aspect of a problem or part of a system. If a computer configured in this way is give2. Discussing and sharing---How have computers changed our lives?Someday soon, if you haven’ t already, you’ re likely to plug into the computer network nation growing in our midst. Computer terminals, or small computers connected via modem (amodulator/demodulator circuit for encoding/decoding computer chatter) to ordinary telephonelines, should be as ubiquitous as the telephone itself. They’ re a much more useful and huma tool than the phone, and with corporate America behind them the networks will beeverywhere----changing our lives more than any technology since the automobile.Joining a computer network is the same as joining a community. Small systems are like villages,where new members are formally welcomed. The larger networks, the Source and CompuServe,for example, are cities-anonymous, full of life and events, but difficult to fit into.III. Reading1. Listening and reading to the recording of the text WHO AM I?Turn to page 18 and listen and read to the recording of the text. Pay attention to the pauses,pronunciation and intonation of the native reader.2. Reading aloud and underlining expressionsNow we are to read the text once again and underline all the expressions in the text. Put themdown into your notebook after class as homework.Collocations from WHO AM I?begin as ⋯ , a calculating machine, be built as ⋯ , at that time, a technologicalrevolution, the start of artificial intelligence, write a book, be made to work, solveproblems, from then on , grow any larger, As time went by, go back to⋯ ,be made smaller, memory became so large, stand there by oneself, be connected by share knowledge⋯ with, othersthrough⋯ , be put into⋯ , provide humans with⋯ , deal with⋯ , truly filled with⋯3. Reading, identifying and settlingAttention, please! It is time to skim the text one more time and identify the difficult sentences. Tryanalyzing the structures of the difficult sentences and discuss them among your group members. Youmay also put your questions to me for help.Chat （ online）（在）聊天To chat is to talk about ordinary things that are not very important. You can chat to one person or tomany people. People also use this word now for parts of the Internet where we can talk withmany different people at the same time. Usually, you chat on the internet in a chat room ormessaging service like AOL(American On-Line) Instant Messenger (AIM), Yahoo Messenger, orMSN Messenger.IV . Comprehending1.Scan the text for information to complete the table below, describing the development of computer.In 1642The computer began as a calculating machine. In 1822The analytical machine was made by CharlesBabbage.In 1936The computer grew rapidly both in size andin brainpower.1940s The computer had grown as large as a room. In 1960s The first family of computer was connected to each other.In 1970s Computers were used in offices and homes. Now Computers connect people all over the world Together.2. Read the text again and complete the chart below.Paragraph 1Paragraph 2Paragraph 3 Topic Over time I have These changesSince the senten been changedonly1970sce quite became possible many newa lot.as my memory applicationsimproved.have beenfound for me. Suppo Calculating tubes communicat rting machine transistors ionsdetails Analytical chips financemachine network tradeUniversal world wide robotsmachine web mobilePC phoneslaptop spacerocketsproviding alife ofhigh qualityPeriod 2:Learning about LanguageTeaching Aims:To learn to use The Present Perfect Passive VoiceTo discover useful words and expressionTo discover useful structuresProceduresI. Warming up by reading to the tapeTo begin with, turn to page 18, listening to and reading to the recording of the text WHO AM I?Attention goes to the pauses and intonation, as well as the pronunciation of the reader.II. Discovering useful words and expressionsIn pairs do the exercises 1, 2 and 3 on pages 20. You must finish them in 10 minutes.III.Learning about grammar1. Passive Voice— OverviewTense or Model Passive SentenceSimple Present The TOEFL exam is given every six months.Simple past The TOEFL exam was given last month.Simple Future The TOEFL exam this year will be given on October15.Present Continuous The TOEFL exam is being given every year.Present perfect The TOEFL exam has been given every year since 1950.Past perfect Simple Modal Past Modal The TOEFL exam had been given before the Vietnam War occurred. The TOEFL exam should be given to every Foreign student.The TOEFL exam should have been given to all to enter US colleges.2. The Present Perfect Passive VoiceThe structure of The Present Perfect Passive Voice is: have/ has ＋ been＋ ~edIV . Reading aloud and discoveringNow go back to page 18 to read aloud and discover in the text examples of The Present Perfect Passive Voice.⋯as a laptop, I have been used in offices and homes since the 1970s.Since the 1970s many new applications have been found for me.V. Discovering useful structureWe shall do grammar exercises 1, 2 and 3 on page 21.VI. Closing down by doing a quizCorrect the mistakes in these passive voice sentencesExample: The house was build in 1880. (correct = The house was built in 1880.)1.3000 employees were laying off.2. A story will made up.3.An idea was putted forward for discussion.4.Has the book been give back to you yet?5.My bank loan will be payed off in five years time.6.Nothing can be hold against me.7.Our allies will be lend support.8.She has never heard of.9.She was being knocked down by a bus.10.She was letted off with a fine.11.The candle was blow out by the draught.12.The criminal were locked up.13.The flood water was be kept back by barriers.14.The inconvenience will made up for by this money.15.The keys must have been being left behind.16.The old cinema is being pull down.17.The protesters being held back by the police.18.The road was blocking off.19.Thirty more people were laid off last week.20.Your jacket can be hanged up over there.Period 3: Using Language Teaching Aims:Todiscuss about ITTo write a report about ITTo read about androids or robotsProceduresI. Warming up by talking about ITWhat is Information technology?Information technology (IT) or information and communication technology(ICT) is the technology required for information processing. In particularthe use of electronic computers and computer software to convert, store,protect, process, transmit, and retrieve information from anywhere,anytime.II. Listening and writingTurn to page 22. Discuss in pairs what IT consists of and then make a list. Listen to the text aboutdifferent kinds of information technology or IT, discuss and write down in groups the advantagesand disadvantages of each kind.III.Reading, speaking and writingIt is said that computers could be put into androids or robots. Read the text Andy—The Android,underlining all the expressions and think of the fun you could have!Expressions from Andy —The Androidpart of a football team, once a year, get together, play a football game, be as⋯ as ⋯ , in fat,li ke ⋯ , on the football team, run fast, think like a human, shout to ⋯ , in computer language, have a good shot for a goal, get second place, win the first place, have a new kind of program, improveone ’ s intelligence, create a better system, play against a human team, in a way, program⋯make up⋯ , after all, with the help of⋯Speaking and writingSuppose you and your partner are going to help choose computers for your school. Now talk aboutthe special things each of the computer can do and write a report to your headmaster.IV. Writing a letterSuppose you are an android. What would say to a spoiled child who would not do his homework? Write a letter to the boy.AndroidAn android is an artificially created being that resembles a human being. Theword derives from Greek Andr- ‘ man,human’and the suffix -eides used tomean ‘ of the species, kind, alike’ (from eidos‘ species’ ).The word droid, a robot in the Star Wars universe, is derived from thismeaning. Some people maintain that, etymologically, the word android means resembling a malehuman and that a robot resembling a woman should logically be called a gynoid for sexistlanguage to be avoided; however, this word is not commonly used.Unlike the terms robot (a mechanical being) and cyborg (a being that is partly organic and partly mechanical), the word android has been used in literature and other media to denote severaldifferent kinds of man-made, autonomous creations:a robot that closely resembles a humana cyborg that closely resembles a humanan artificially created, yet primarily organic, being that closely resembles a humanAlthough essentially human morphology is not the ideal form for working robots, the fascinationin developing robots that can mimic it can be found historically in the assimilation of two concepts: simulacra (devices that exhibit likeness) and automata (devices that have independence).The term android was first used by the French author Mathias Villiers de l'Isle-Adam (1838-1889) inhis work Tomorrow ’sEve, featuring a man-made human-like robot named Hadaly. As said bythe officer in the story,“ In this age of Realien advancement, who knows what goes on in the mind of those responsible for these mechanical dolls.”附：备课参照资料Computer BasicsTo accomplish a task using acomputer,you need acombination of hardware,software, and input.Hardware consists of devices,like the computer itself, the monitor, keyboard, printer, mouse and speakers. Inside your computer there are more bits of hardware, including the motherboard, where you would find the main processing chips that make up the central processing unit (CPU). The hardware processes the commands it receives from the software, and performs tasks or calculations.Software is the name given to the programs that you install on the computer to perform certain typesof activities. There is operating system software, such as the Apple OS for aMacintosh, or Windows 95 or Windows 98 for a PC. There is also applicationsoftware, like the games we play or the tools we use to compose letters or domath problems.You provide the input. When you type a command or click on an icon, you are telling the computer what to do. That is called input.How They Work TogetherFirst, you provide input when you turn on the computer. Then the system software tells the CPUto start up certain programs and to turn on some hardware devices so thatthey are ready for more input from you. This whole process is calledbooting up.The next step happens when you choose a program you want to use.You click on the icon or enter a command to start the program. Letexample of an Internet browser. Once the program has started, it is ready for your instructions. You either enter an address (called a URL, which stands for Uniform Resource Locator), or click on an address you’ ve saved already. In either case, the computer now knows what you want it to do. The browser software then goes out to find that address, starting up otherhardware devices, such as a modem, when it needs them. If it is able to find the correct address, the browser will then tell your computer to send the information from the web page over the phone wire or cable to your computer. Eventually, you see the web site you were looking for.If you decide you want to print the page, you click on the printer icon. Again, you haveprovided input to tell the computer what to do. The browser softwaredetermines whether you have a printer attached to your computer, and whether it is turned on. It mayremind you to turn on the printer, then send the information about the web page from your computerover the cable to the printer, where it is printed out.II. TelevisionOld portable televisionA television (also TV or telly) is a device (tool) with a screen that receives broadcast signals andturns them into pictures and sound. The word“ television” comes from the words tele (Greek for far away) and vision (seeing).Usually a TV looks like a box. Older TVs had large wooden frames and saton the floor like furniture. Newer TVs became smaller so they could fit onshelves, or even portable so you could take it with you wherever you went.The smallest TVs can fit in your hand. The largest TVs can take up a wholewall in your house, and may sit on the floor, or be just a large flat screen thatcan be mounted on the wall. Many TVs are now made in widescreen shape like movie theatrescreens, rather than old, more square TVs.A television has an antenna (or aerial), or it has a cable. This gets the signal from the air, or cableprovider. TVs can also show movies from DVD players or VCRs. TVs can be connected tocomputers and game consoles, usually through a kind of socket called.“ SCART”III. Web or World Wide WebThe World Wide Web is the part of the Internet that contains web sites and web pages.It is not used to describe WebPages that are used offline where net services are not available, orno computer network exists - such as Wikipedia on CD. In this case no real physical site existsother than the place where the computer is. Blog and Wiki capabilities will also not be availablebecause these require a communication with other computers.IV .RadioRadio is a communications invention. Though originally used tocommunicate between two people, it is now used to listen to music, news,and people talking. Radio shows were the predecessor to TV programs.V. DVDDVD most commonly stands for “ digital versatile disk ”It. can playvideo that is of a higher quality than a VHS tape.VI. Two kinds of DVDThey can also hold 4.7 GB of information as opposed to the 700 MB that a CD can hold. A plus of using a DVD for a video is the ability to have interactive menus and bonus features such as deleted scenes and commentaries.VII. EmailEmail (electronic mail) is a message, usually text, sent from one Internet user to another. Email is quicker than snail mail(mail) when sending over long distances and isusually free. To send or receive an email, a computer with a modem andtelephone line connected to the Internet, and an email program arerequired. Email addresses are generally formated like this: login@server.(com or fr or org or uk or other).Some companies let you send and receive email for free from a website. Gmail, Hotmail and Yahoo! do this.VIII. HumanHere are two humans.A man is on the left and a woman is on the right.A human or human being is a person, like you.A male human is a man, a female human is a woman. If you think about all humans in the whole world, they are called humanity. In the past, people have also used man and mankind to mean all humans.Humans are called Homo sapiens by scientists. Humans are an animal species that belongs to the group called primates. Monkeys are primates too, but the primates most like people are gorillas and chimpanzees. Most scientists think that chimpanzees and humans came from a common ancestor by what is called evolution. Other animals even more like humans than chimpanzees once lived too, but they are now extinct.Human rights are those things that everyone deserves and the way they should be treated by other people.选择朋友要经过周祥观察，要经过命运的考验，无论是对其意志力仍是理解力都应预先查验，看其能否值得信任。

新人教必修2 Unit 3 THE INTERNETReading and Thinking: Stronger Together: How We Have BeenChanged by the Internet文本简析本单元阅读文本的话题是互联网对人们的积极影响：互联网不但给人们的生活带来便利，而且能促进人与人之间的相互帮助，使人们变得更加强大。

该文本是叙事性文本，讲述了英国一位名叫简的英语教师辞职后，借助互联网得到了帮助，并主动帮助他人的事例。

从表层意义讲，文本讲述了互联网是如何改变人们的生活方式的；从深层意义来看，本文进一步表达互联网带给人与人之间的“连锁反应”：互联网作为媒介，连接着人与人之间的互助，激发着人们积极向上的正能量，传递着人们之间的互相关爱。

全文共五段，文本结构清晰。

第一段阐明了互联网带给人们的积极影响；第二、三、四段讲述了简失业在家及接触互联网后心理和行为上的变化；第五段通过简自己的话语，解释了她愿意帮助别人的原因，体现了相互帮助带来的积极效应。

本文可以围绕标题中的关键词“change, stronger, together”展开教学，主要通过静默阅读提取文本信息、提问处理相关语言、人物鉴赏学习优秀品质、写作迁移训练语言能力等几个教学策略达到本文的阅读课教学目标。

第1课时一、教学内容提取标题中“stronger, together, change”和“Internet”四个关键词。

梳理关于互联网、人物和描述变化的语言。

抓住“变化”主线，梳理文本，系统化地处理信息。

二、课时目标1. 通过分析标题关键词，理清标题与文本的内在联系，掌握文本主要内容。

2. 理解表示变化、互联网等的话题语言，能够在关键词的帮助下，复述主人公简的故事。

3. 通过记者与简之间角色扮演，进一步梳理简的故事，训练语言的综合运用能力。

三、教学过程Activity 1 Finding out the key words of the title本活动为实现课时目标1而设计。

Unit3 Computers Period 5 Writing 优秀教案（人教版必修2）Period 5 WritingThe General Idea of This Period：This period includes speaking and writing on Page 22 and writing on Page 23.The purpose is to encourage the Ss to think and talk creatively about computers and androids，express their own opinions using words and expressions concerning computers and androids，and organize their ideas into a composition.Teaching Aims：1.Enable the students to learn how to write a report about their choice.2.Enable the students to learn the writing way of expressing ideas and giving reasons to support the ideas.Teaching Important and Difficult Point：How to make a decision about which kind of computer to buy and explain why.Teaching Methods：1.Task-based learning.2.Cooperative learning.Teaching Aids：A projector and multimedia.Teaching Procedures：Step 1 Speaking and writing （Page 22）T：Class，suppose you and your partner have been asked to help choose computers for your school.You have looked at several computers.Talk about the special things each computer has.Make a decision about which kind of computer to buy and explain why.And then you are going to write a report about your choice There is a list of things your computer could have.A fast PC the monitor is smallerImproved disc storage used recycled materialsInternet a flat screenStudents talk about the special things each computer can do.T：So much for the talking.And now you will be given five minutes to write a report about your choice.After that some of you will be asked to present your report to the class.In your writing try to use the present perfect passive in your report.You may begin your report like this：We looked at many different computers.The one we have chosen is the PEP personal computer.One of the main reasons is that it is suitable for schools.We found out that...Five minutes later，several students begin to present their reports to the class，and the teacher will show two or three reports using the projector to find out and correct the possible mistakes with the class.Possible versionWe looked at many different computers.The one we have chosen is the PEP personal computer.One of the main reasons is that it is suitable for schools.We found out that it looked not only cute but also advanced.First，it has a flat screen which makes the computer pretty attractive.But the second and the most important aspect about the PEP is that it has undergone a lot of improvements in many respects.For example，it contains improved disc storage and that means it’s faster PC.It’s suitable to be connected to the Internet.Also the PC has a smaller monitor and is made with used recycled materials which do no harm to the environment.In a word，we think it is suitable for our school.T：Thank you for helping choose computers which are suitable for our school，and I’m sure with these computers to be equipped in our school we will improve the teaching conditions and teaching quality of courseNow，let’s come to the writing on Page 23. Step 2 Writing（Page 23）T：Boys and girls，suppose you are an android and work for a family with one child who is very spoiled.The parents want you to do everything for them.The parents are kind，but they often ask you to watch over their child.How do you feel?What would you do if the child asked you to do his/her homework for him/her?Would you tell the child “no”?You may begin like this：Hello，everyone.My name is______.I’m a 321 model android.I work for the Li family...Now，you will also be given five minutes to write your opinion and feelings.Five minutes later，the teacher shows two or three of the passages written by the students using the projector to find out and correct the possible mistakes with the class.Possible versionHello，everyone.My name is ______.I’m a 321 model android.I work for the Li family.My job is taking care of their only son.The parents are nice but the boy is spoiled.The family asked me to do everything for them，from shopping to cleaning the floors.But what’s terrible，the child asked me to do his homework!That’s too much!I’m an android，yes，but I’ve got my mind and feelings I can’t do things that are harmful to people against my will!Step 3 Summary and HomeworkT：Boys and girls，in this period，we worked hard and wrote two short compositions.You’ve not only learned to make your choices or express your ideas but also learned to give your reasons to support your choices or ideas.It’s really a practical writing job for you to do，don’t you think so?Such writing jobs，I’m sure，will help you improve your writing skills.Now homework for you today—go over the whole unit.Step 4 The Design of the Writing on the BlackboardUnit 3 ComputersPeriod 5A fast PC the monitor is smallerImproved disc storage used recycled materialsInternet a flat screenStep 5 Record after Teaching。

Unit 3 Computers(教学设计)Reading: Who am I?Teaching goals:1. To have a better understanding of the main idea of the passage.2. To enable the students to talk about computers and robots in English3.To learn two reading skills.Teaching aids: Computer, student’s book.Teaching difficulty: How to find topic sentences and supporting details.Teaching procedures:Step 1. Lead-inShow the topic of the unit and tell the students that what we are going to learn today. At first,I will show them some pictures and get them to say what they are.An old calculating machine used in China until now. (An abacus)It is built to solve some mathematical problems. But it is too big. (A huge computer) It is a new calculating machine which can solve a large number of mathematical problems.(A calculator)It is a personal computer which can solve all kinds of problems and is used widely now.(A PC / personal computer)Then show these pictures out of order and let them put the pictures in order of time. Check the answers together. Let the students know what they’ll learn today.Show the teaching aims on the screen: Getting a better understanding of the passage. Learning two reading skills.Step 2 SkimmingAsk the students to skim the first paragraph as quickly as they can and answer: Who am I in the passage?They can deal with this question easily so we just need to check the answer.Reading for the main idea of the passage. They can choose it from two sentences. Give students only 1 minute, then ask them to get the main idea of the passageStep 3 Reading for specific information.At the beginning, explain to the students what topic sentence and supporting details mean. Students can read the explanation on the screen by themselves.As the passage is a bit difficult, I’ll lead the students to find out the topic sentence and supporting details of paragraph 1. Add explanations where necessary.Next, the students should be able to find out the topic sentences and supporting details of paragraphs 2 and 3. Give them several minutes.After finishing the tasks, make a simple summary.As we talk about the development of something, time is very important for us to understand better. Now let’s complete the timeline on page 19. Give them three minutes to finish it individually.A chain of events showing the development of computer / Changes of the machineTimeline1642: ____________________________________________::the Analytical Machine was made by Charles Babbage.1936:_______________________________________________________________________1960s:______________________________________________________________________: the first family of computers was connected to each other.1970s: ______________________________________________________________________Now:_______________________________________________________________________In order to help the students get a better understanding, I’ll show them a short video about the development of computers.Step 4 Post-readingNow we know the development of computers(show the pictures in the right order). Can you guess What’s Next?Give students 2 minutes to talk with parters about What will robots do for us in the future?Then ask some students to share their opinions with us.Summarize like this: Robots are useful in our daily life. For example, it can help us cook, clean the room, wash clothes and accompany us . Also, they can direct the traffic,carry out operations and even do some dangerous jobs.Blow the short summary, I’ll show them two sentences and they are supposed to decide which one is the topic sentence:A.Robots can do a lot of things for us.B.Robots have changed a lot.Step 5 SummaryToday we have learnt:1). the development of computers2) how to find topic sentences and supporting details.Encourage the students to use the reading skills in study.Step 6 Homework1. Read the text aloud and try to retell it in order of time.2. Read the passage again. Underline the sentences that you don’t understand and try to solve the problems using context clues and the dictionary.。

《多媒体课件制作与使用技术》课题：The Olympic Games姓名：Mia Dong 学号：17专业：英语班级： 4课程名称：多媒体课件制作与使用技术学期：2012至2013学年第二学期人教版高中英语必修二第三单元《The Olympic Games》教学设计Mia Dong 外语系4班17一、学情分析（一）学习者分析1、一般特征：学生基本上来自农村，英语水平参差不齐，学习压力大；学习策略与方法不合理，有的学生还不喜欢英语。

2、学习风格分析：对于高中生来说，学习的习惯和方法还是局限于较为死板，习惯于题海战术，很少有自发的对感兴趣的课题的研究或学习；学生习惯于上课认真听老师讲解，较少地参与主动地学习，一直是较为死板地学习，老师激发学生兴趣，使其主动融进课堂学习。

3、初学能力判断;既一个学期的高中英语学习后，学生的英语水平能力有提高，但还需继续努力；关于必修二已经学习了第一、二单元，学生基本可以接受第三单元的学习任务，前提是必须认真融入由教师带领的学习氛围中。

（二）教材分析本单元以世界性的体育盛会──Olympic Games 为话题，旨在通过本单元的教学，使学生了解奥运会的起源、宗旨、以及古现代奥运会的异同。

学会用英语表达自己的兴趣爱好以及如何向别人推荐某一种爱好，同时培养学生对体育运动的爱好。

二、教学目标教学要求：（一）教学模式关于第二单元本环节——reading部分，采用教学问答模式、课堂授受模式、指导自学模式、合作交流模式以及探究学习多种模式交叉运用。

（二）教学策略主要是使用替代式教学策略，使学生在短期内学习许多内容，提高教学效率。

其中穿插问题引导方式，从而克服单一的替代式教学策略的不足（三）教学方法以语言形式获得间接经验的方法为主，通过教师和学生口头语言活动及学生独立阅读书面语言为主，其中使讲授法、谈话法、讨论法和读书指导法交叉使用。

四、教学平台以多媒体课件演示为主，辅之以少量板书，即多媒体课件教室的教学环境。

第3章基因的本质第1节 DNA是主要的遗传物质一、教学目标（一）知识目标1.通过肺炎双球菌的转化实验和噬菌体侵染细菌的实验，理解DNA是遗传物质。

2.通过重演科学发现DNA是主要遗传物质的过程，学会科学研究的方法和实验设计的基本步骤。

（二）能力目标1.通过自己设计验证性实验，培养分析问题、解决问题的能力和创新思维能力。

2.以噬菌体侵染细菌的实验说明DNA是遗传物质，训练学生由特殊到一般的归纳思维能力。

（三）情感、态度与价值观目标1.养成实事求是的科学态度，培养不断探究新知识和合作的精神。

2.实验验证DNA与RNA是遗传物质，强调了生命的物质性，有助于辩证唯物主义世界观的树立。

二、教学重点1.肺炎双球菌转化的实验原理和过程。

2.噬菌体侵染细菌的原理和过程。

3.证明DNA是遗传物质的实验的关键设计思路。

三、教学难点1.肺炎双球菌转化的实验原理和过程。

2.证明DNA是遗传物质的实验的关键设计思路。

四、课时安排1课时教学过程一、导入新课：复习导入19世纪中期，孟德尔通过豌豆实验证明了：生物的性状是由基因控制的。

20世纪初期，摩尔根通过果蝇实验证明了：基因位于染色体上。

20世纪中叶，科学家发现：染色体主要由蛋白质和DNA（成分）组成。

那么，这两种物质究竟哪一种是遗传物质呢？请大家把书打开到42页，我们今天一起学习——第3章第1节DNA是主要的遗传物质。

要想找到DNA是遗传物质的证据，首先得选择合适的实验材料，应该选择什么样的生物做实验材料呢？为什么？请举例。

1928年，格里菲思利用肺炎双球菌这样一种细菌做实验寻找遗传物质，请大家阅读书本43页，看看格里菲思怎样做实验的。

二、肺炎双球菌的转化实验（一）格里菲思的体内转化实验（1928）1、本实验用的生物材料是什么？肺炎双球菌有几种类型？2、动画展示四组实验过程①活的R型细菌感染老鼠不死亡②活的S型细菌感染老鼠死亡③灭活的S型细菌感染老鼠不死亡④活的R型+死的S型感染老鼠死亡讲述：从第一、二组实验可以说明R型活细菌不具有致死性，S 型活细菌具有致死性；从第二、三组实验可以说明死亡的S型细菌不具有致死性。

人教版语文必修二第三单元教案
人教版语文必修二教案第三单元
8 兰亭集序教案
9 赤壁赋教案
10 游褒禅山记教案
 八、兰亭集序
 王羲之
 教学目标：1、理解作者的写作意图，领悟作者对人生重大问题的深切感慨。

 2、了解书序的特点。

 3、体会情景交融、叙议结合的写作手法及行文的巧妙。

 4、掌握文中出现的“毕、修、引、次、是”等重点实词和特殊文言句式。

 5、掌握文中出现的“之、于、所、夫”等重点实虚词的含义。

 教学重点：1、王羲之对生与死的理解和认识及对时光易逝的感慨。

 2、”毕、修、引、次、是”等重点实词和特殊文言句式。

 教学难点：1、理清作者感情的变化思路从而背诵课文。

 2、“之、于、所、夫”等重点实虚词的含义。

 教学方法：1、朗读法：2、问答法：
 教具准备：录音机、《兰亭集序》朗读磁带。

 教时安排：二课时。