Unit2-Cloning教学设计

1、Unit2 CloningReading: CLONING: WHERE IS IT LEADING US? 教学设计西安市第十九中学张媚一、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。”阅读" （Reading）部分提供的材料 CLONING: WHERE IS IT LEADING US?是一篇介绍克隆技术的说明文，具体介绍了植物与动物克隆的区别，多利羊 的诞生与死亡及由此引发的争论。帮助学生进一步认识克隆的意义在于解决医学 上的难题，为人类服

2、务。从话题内容上分析，Warming Up与Reading相一致,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（精读课）”。二、学情分析我所带的两个班级的学生英语基础一般，平时较少阅读科学题材的文章，知识面相对狭窄，阅读理解这篇文章还是有一定难度。 但学生的好奇心和学习接受 能力比较强，可以布置学生课前上网或去图书馆找出一些有关克隆的资料，并与多媒体相结合简单介绍克隆及克隆技术的一些知识，让学生有了一定的知识准备 以利于很好的理解课文。三、设计理念及教学目标这节课的主要目的是培养学生跳读和细读的阅读技巧， 使学生学会准确分析 阅读问题，懂得从

3、文章中找到关键句子摄取必要的信息，找出正确的答案。我运 用多媒体和学生搜索材料主动参与学习相结合， 设计了表格、问答题、判断题和 信息整理题。这不仅提高学生的阅读技巧，也教会学生怎样处理不同的阅读问题。四.教学目标 Teaching goals1. Target language 目标语言a.重点词汇和短语clone , commercial , producer , undertake , arbitrary , object , forbid , ac cumulate , cast down , object to , the media , in favor ofb. 重点句子It i

4、s a way ofThe fact is thatThe question that concerned all scientists were: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 le

5、arn how to describe cloning.Teaching important points教学重点How to describe cloning.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.Te

6、aching procedures & ways教学过程与方式Step 1 Lead-in （3 分钟）Show three cartoon pictures about cloning to arise students' interest5, then raise the question:1. What is cloning?2. Do you want to be cloned or not? why?通过展示图片和提问，激发学生对克隆技术的兴趣和好奇心，启发学生预测课文的内容，以便通过阅读验证自己的推测。Step 2 Warming up （1 分钟）Show the

7、 picture of Dolly the sheep（ 多莉羊）on the screen. Get studen ts to look at the picture and discuss:How does Dolly differ from other sheep?进一步营造宽松和活跃的课堂气氛，充分调动学生学习的积极性，即或学生的 思维，培养他们发散思维能力。这就为进一步的学习做足了铺垫。Step 3 Reading （共 26 分钟）Get the students to comprehend the passage quickly and accurately and meanwh

8、ile help the students form a good habit of reading Task1.Skimming （6 分钟）Ask students to skim the passage and get the main idea of each paragraph.Para 1 The definition of cloning.Para 2 The two major uses and the procedure of cloning.Para 3 The problem of Dolly.Para 4 The impact of cloning in society

9、.Para 5 People ' reaction to cloning. .Task2. Detailed reading （18 分钟）Ask the students to read each paragraph of the text carefully and answer the following questions.（由于文章较长信息点较多，在这里采取分组合作模式，目的是让学生在短时间内快速捉和了解文章关键信息，把全班学生分成小组，每个小组有三位成员和一位组长，小组共同完成以下的任务，组长整 理归纳组员的信息并陈述结果。)Para 1 The definition of

10、 cloning.True or false:1. Cloning is a new topic.2. When a gardener takes cuttings from growing plants to make new ones, we say the new ones are natural cloning.3. Cloning happens both in plants and in animals.Para 2 The two major uses and the procedure of cloning.1 .The word “ straightforward "

11、; means.A. uncomplicatedB. honest C. rankD. difficult2 .The cloning of Dolly the sheep succeeded because.A. its easier to clone a sheep than otherB. the scientists were determined and worked hard with patienceC. the scientists were rewarded and got lots of moneyD. many other attempts to clone mammal

12、s failed3. The lamb is the clone of the cell from sheep B because.A. it provides the egg cellB. it gives birth to the lambC. it provides the nucleusD. it is a female sheepPara 3 The problem of Dolly.At first, the fact that Dolly seemed to developed was .Then, came the disturbing news that Dolly beca

13、me.Altogether Dolly lived, half the length of the life of .Para 4 The impact of cloning in society.1. On the other hand, Dolly ' appearance andthe media and public imagination.2. The word " controversial “ in paragraph 4 probably means.A. complicatedB. arguable C. importantPara 5 People 

14、9; sreaction to cloning.CharacterTheir own reactionEvil leader:Religious leaders:Government:Some countriesOther countries.Task3. Further comprehension (2 分钟)The writer 'attitude towards cloningA. Objective (be fair)B. Negative (be against it)C. Positive (be in favor of it)Because授课中始终围绕读， 以 list

15、ening, skimming, careful reading 和 compre hending等多种方法渐进式导入学生去理解课文和解决课标阅读任务。Detailedreading过程中，课堂采用循序渐进式阅读教学促使学生积极配合，使学生对 文章中的一些细节知识有好的把握，对作者的写作态度有深层次的理解。Step4. Retelling the text （7 分钟）Cloning is a way of an exact copy of another animal or plant. Cloning has two uses. Firstly, gardeners use it to p

16、roduce plants. Secondl y, it is for medical research on animals. Cloning plants is straightfor ward but the cloning of animals is more. The procedure is diffic ult to . In 1996, scientists succeededin Dolly the sheep. Th en came the disturbing news that Dolly was ill. Dolly lived for si x years and

17、a half, Dolly ' asppearance raised a storm of. Governm ent became nervous and many research into human cloning. Scientists still whether cloning will help or harm us and where it is leading us.对课文进行及时概括能够帮助学生全面理解整篇文章大意，在阅读的的基础上 进行语言输出，使学生学会用英语对克隆进行描述，从而达到学以致用的效果， 提高学生学习英语的积极性。Step5. Summary （2 分

18、钟）As a coin has two sides, everything has two aspects. On the one han d, if cloning is used in a correct way it can bring much convenience to us. On the other hand, if cloning is used in an evil way it can ca use much trouble. Therefore, we should use cloning in a wise way.对整篇文章进行小结使学生清楚的认识到克隆的利弊关系，从而以正确的态度 去对待，使克隆技术能更好服务于人类。Step6. Homework （1 分钟）