高中英语 Unit 2 Cloning教学设计1 新人教版选修81.docx

1、高中英语 Unit 2 Cloning教学设计1 新人教版选修81 Unit 2 Cloning 单元教学目标技能目标GoalsTalk about cloningPractice expressing and supporting an opinionUse the appositive clauseWrite a composition about cloning.目标语言功 能 句 式Expressing and supporting an opinionIm happy to accept . But.I would never accept.Im not bothered about

2、.I dont mind but.I hope youll carry on.Are you sure you want to.I agree with you that.Is it fair to.?Do you think it is wise to.?I think you should.Well done to you for.I dont understand why you dont.I cant help thinking.I could never agree to.词 汇1. 四会词汇Strawberry，differ，exact，straightforward，breakt

3、hrough，disturbing，cast，altogether，objection，media，moral，ceiling，shortly，retire，assumption，merely，decoration，zebra，aloud2. 认读词汇identical，nucleus，gene，somatic，embryo，fate，impact，extinct，popularity，Jurassic，bison，calf，DNA，habitat，restore，Auroch，Great Auk，Quagga3. 词组cast down，object to，the media，in favo

4、ur of，（be）bound to（do）, from time to time, bring back to life, pay off4 重点词汇clone， commercial， producer， undertake， arbitrary，object ，forbid， accumulate bother， regulation， resist， unable， argument ，reasonable， obtain 结构Appositive clause that 可引导同位语从句重 点 句 子It is a way of.P11The fact is that.P11The

5、question that occurred is.P12How differently do people think of.P14The.is butP14The advantage is that.P15How would you treat.P54I dont mind but.P55I agree with you that.P55III. 教材分析与教材重组 1. 教材分析本单元以Cloning为话题，旨在通过单元教学，使学生了解克隆技术的优缺点，学会表达和支持个人观点，能用所学的有关Cloning的词汇去表述自己对这一新技术的观点和看法。 1.1 Warming Up 提供了四幅

6、有关Dolly the sheep(多莉羊) A strawberry plant(草莓植物) Twins（双胞胎婴儿） Identical dogs(克隆狗)的图片，让学生用已有的知识和经验讨论对克隆技术的看法与观点。 1.2 Listening是关于人类克隆的听力材料，难度中等。 1.3 Speaking 根据材料，四人小组合作，要求把自己对克隆婴儿的态度和感觉用相关的语言表达出来。语言要得体，锻炼语段表达能力。 1.4 Pre-reading是Reading的热身活动。它要求采用与同学讨论交流的方式谈论有关克隆的相关知识。 1.5 Reading是一篇介绍克隆技术的说明文。 1.6 Co

7、mprehending第一题所给出的表格让学生根据课文内容列举克隆技术的优缺点。第二题让学生根据所拥有的知识来评价作者的观点。第三题要求学生用自己的语言阐述对克隆技术的观点并给出理由。 1.7 Learning about Language 分词汇和语法两部分，其中Discovering useful words and expressions 是根据语境在运用中掌握词汇。Discovering useful structures 是通过阅读和补全句子来练习。 1.8 Using Language中的Reading，Discussing and writing要求学生先读, 然后完成四个任务型

8、的作业。即 1. 讨论并回答三个问题。回答这些问题，2. 讨论几种已经灭绝的动物，并且讨论哪种动物应该被恢复到这个世界上，并且给出理由。3. listening and speaking 让学生根据所听到的内容选择并列出文中人物观点。 2. 教材重组 2.1 从话题内容上分析，Warming Up 与Reading相一致；而从训练目的上分析与TALKING比较一致。从教材份量来说，可将Warming Up和Reading整合在一起，设计成一节任务型“阅读课（一）（精读课）”。 2.2 将Listening 和Workbook中的LISTENING整合在一起，设计成一节 听力课。 2.3 将Us

9、ing Language 与Workbook中的TALKING和SPEAKING TASK 结合在一起，设计成一节“口语课” 2.4将Learning about Language 与Workbook中的USING WORDS AND EXPRESSION整合在一起上一节“语法课”。2.5将Workbook中的READING TASK 和PROJECT以及WRITING TASK整合成一节“泛读与写作课”。 3. 课型设计与课时分配 1st period Reading 2nd period Listening 3rd period Speaking 4th period Grammar 5t

10、h period Extensive reading and writing . 分课时教案The First Period ReadingTeaching goals教学目标1. Target language目标语言 a. 重点词汇和短语clone，commercial，producer，undertake，arbitrary，object，forbid，accumulate，cast down，object to，the media，in favour ofb. 重点句子It is a way of.The fact is that.The question that occurred

11、is.2. Ability goals能力目标Enable the students to describe cloning: What is the advantages of cloning？ What is the problems or dangers of cloning？What is your opinion of cloning？3. Learning ability goals 学能目标Help the students learn how to describe cloning.Teaching important points 教学重点 How to describe c

12、loning.Teaching difficult point 教学难点Help the students analyze the writing techniques of the article.Teaching methods 教学方法Skimming, task-based method and debate method.Teaching aids 教具准备A recorder, a projector and some slides. Teaching procedures & ways教学过程与方式Step I Lead-inThis topic is difficult for

13、 students. So teacher should help the students learn more about it. Do this in the way of asking and answering questions.T: You can imagine how rapidly the modern science and technology develop. I think most of you must know something about space traveling, submarine exploration, robot, maglev train

14、, gene engineering etc. But in recent years, a hot topic, cloning is often mentioned, especially when the cloning Dolly the sheep appeared. You may have first heard of cloning when Dolly the Sheep showed up on the scene in 1997. Cloning technologies have been around for much longer than Dolly, thoug

15、h. First things first, what is cloning and a clone? The dictionary says cloning is the technique of producing a genetically identical duplicate of an organism. A clone is said to be all descendants derived asexually from a single individual, as by cuttings, bulbs, by fission, by mitosis, or by parth

16、enogenesis reproduction. It sounds very different and complicated to us. In fact, I mean, in our daily life, this happens often. For example, gardeners take cuttings from growing plants to make new ones. You often see that your mother picks a small branch from a growing plant to make a new one. If s

17、he likes this kind of flowers, she can do cloning. Cloning also happens in animals or human beings when twins identical in sex and appearance are produced from the same original egg. The fact is that cloning plants is straightforward but the cloning of animals is more complicated. The possibility of

18、 human cloning, raised when Scottish scientists at Roslin Institute created the much-celebrated sheep Dolly, aroused worldwide interest and concern because of its scientific and ethical implications. You can give your questions if you are interested in this topic. I am here today one of the scientis

19、ts who work in this field. I am ready to answer any of your questions.S: Now we know what is cloning. Are there different types of cloning?T: When the media report on cloning in the news, they are usually talking about only one type called reproductive cloning. There are different types of cloning h

20、owever, and cloning technologies can be used for other purposes besides producing the genetic twin of another organism. A basic understanding of the different types of cloning is key to taking an informed stance on current public policy issues and making the best possible personal decisions. The fol

21、lowing three types of cloning technologies will be discussed: (1) recombinant DNA technology or DNA cloning, (2) reproductive cloning, and (3) therapeutic cloning.S: Was Dolly created by what cloning? And why was Dolly so important?T: Reproductive cloning is a technology used to generate an animal t

22、hat has the same nuclear DNA as another currently or previously existing animal. Dolly was created by reproductive cloning technology. She was the first mammal to be cloned from adult DNA taken from an adult cell. Previously, animals had only been cloned using embryo cells which already have the pot

23、ential to become a complete embryo in its own right. The big breakthrough with Dolly was to make a clone from an ordinary, adult cell in this case from a female goats udder. S: Have you seen Jurassic Park? In this feature film, scientists use DNA preserved for tens of millions of years to clone dino

24、saurs. They find trouble, however, when they realize that the cloned creatures are smarter and fiercer than expected. Could we really clone dinosaurs.T: In theory? Yes. What would you need to do this? A well-preserved source of DNA from the extinct dinosaur, and a could serve as a surrogate mother.

25、In reality? Probably not. Its not likely that dinosaur DNA could survive undamaged for such a long time. However, scientists have tried to clone species that became extinct more recently, using DNA from well-preserved tissue samples.More questions about cloning are given in the appendix. The informa

26、tion above is for reference only. Or you can choose several students and ask them to act out a short play whose main topic is as follows:An old man who was dying left all his fortune to his own son. But the did not know that his son was cloned. So two same young men both claimed that they were the o

27、ld mans son. They quarreled and fought with each other; at last they went to the judge. The judge let them check DNA. The result was that their DNA was the same. Now even the judge did not know what to do.In this part the teacher can give the students some advice to act out. According to this play t

28、eacher ask the students several questions:1. Do you want to be cloned or not? Why?2. If you are the judge what will you do?3. Can you tell me the advantages of cloning?4. And what is the disadvantage?DiscussionIn this part the students will discuss the relationship between the development of technol

29、ogy and social customs.T: As the technology develops day by day, it has a more and more important influence on the whole society. Technology affects social customs and ethics, sometimes technology may go against the conventional thinking, then comes the problem that whether we should stop the develo

30、pment of research or change the ethics.S1: As technology develops in almost every field, a lot of our original customs and ethics changed, either because they are out of time or not so scientific. For example millions of years ago human ate meat of animals without heating them. Later people used fir

31、e and no longer ate raw meat and they also used fire to scare dangerous animals.S2: I think we could not stop the development of technology, for it may develop in the way which is acceptable by social customs.Look at picturesT: Look at the pictures and discuss which ones are natural clones and which

32、 ones are man made. Then explain how they differ.S: I think the twins are natural clones and the Dolly sheep is man-made.T: You are right! Can you explain how they differ?S: The twins were born at the same time, but the Dolly sheep is man-made.T: Anything else? Who want have a try?S: I think the identical dog is man-made.T: Good JobStep II Pre-readingBefore class, as