高中英语Book 8 unit 2Cloning 教学设计学情分析教材分析课后反思.docx

1、高中英语高中英语 Book 8 unit 2 Cloning 教学设计学情教学设计学情分析教材分析课后反思分析教材分析课后反思 Unit 2 cloning Reading Teaching aims:1.To have a basic understanding about cloning.2.To grasp some reading and speaking skills.3.To form the ability to cooperate with others.4.To know the advantages and disadvantages about cloning.Warmi

2、ng up and Pre-reading 通过展示学生们都喜欢的草莓，以及班里双胞胎姐妹的图片引起学生们的兴趣，导入本单元话题。接下来学生们能积极参与到各个学习环节中去。Scanning:The main idea of the text is_ A.animal cloning is very valuable and can benefit the world.B.animal cloning could be misused by bad people so it must be forbidden C.animal cloning is well developed because

3、Dolly the sheep was born.D.animal cloning raised arguments and scientists are not sure about its future.略读，找出文章大意，对文章有整体理解。Careful-reading 1.match each paragraph with the main idea Para.1 The problems of Dolly Para.2 The major uses and procedures of cloning Para.3 The definition of cloning Para.4 Pe

4、oples reaction to cloning Para.5 The effect of Dolly 2.True or False IRead the passage again and decide the statements are true(T)or false(F)1）Cloning means making a copy of an animal or a plant.()2）Gardeners can make a lot of money by cloning plants.()3）Cloning animals is as complicated as cloning

5、plants.()4）Dolly the sheep was the first successful clone of a mammal.()5）Natural clones happen in animals as well as in plants.()3.Comprehension of the text 1).Dolly the sheep_.A.looked exactly like the sheep that provides the egg.B.was the exact copy of the sheep that provides the nucleus.C.looked

6、 like the sheep that gave birth to it.D.had the characteristics of all three sheep.2).It can be inferred from the passage that a cloned animal_.A.usually lives as long as the original one B.usually lives longer than the original one C.usually lives shorter than the original one D.is usually as healt

7、hy as the original one 3).The sheep that donated the somatic cell most probably lived _ years.A.3 B.6 C.9 D.12 4).Which of the following is not an advantage of cloning?A.Cloning can be used for medical purposes.B.Large quantities of food can be produced by cloning.C.Cloning can help keep animals fro

8、m becoming extinct.D.Famous persons who have passed away can be cloned.5).Which of the follow is NOT a problem or danger of cloning according to the text?A.Cloned Bin Ladens would do harm to the world.B.Animal clones may develop the illness of older animals and may die younger than the donor animals

9、.C.There are moral objections to cloning human beings.D.Too much cloning may lead to the destruction of the balance of nature.通过仔细阅读找到一些细节问题，增进对文章理解，以及训练学生运用阅读技巧做阅读题的能力。Intensive Reading 1.Para 1 Cloning happens both in _ and in_.They can be cloned by _ and _.What is cloning?2.Para 2 1）How many majo

10、r uses do cloning have?2）When was the cloning of Dolly the sheep born?Why did the scientists succeed in cloning it?3）Para 3 At first,the fact that Dolly developed _ in a natural way was _.Later,the news _she lived for six years,half the length of the life of the _ one was _.Finally,the problem that

11、occurred to the scientists was that a cloned animal lives_ than the original one.4）Para 4&5 We can infer from the last three paragraphs that _.A.The normal development of Dolly had no effect on the cloning of other species.B.Dollys serious disease and final death disturbed the whole world.C.Dolly su

12、ccessfully cloned a new lamb with the help of cloning scientists.D.There were arguments about animals about animal cloning and concerns about the future of cloning.5）The writers attitude towards cloning A.Objective(be fair)B.Negative(be against it)C.Positive(be in favor of it)分段阅读，解决每段的具体问题。Summary

13、Cloning is a way of making an _ copy of another animal or plant.Cloning has_ major uses.Firstly,gardeners use it all the time to produce_ quantities of plants.Secondly,it is valuable for research on new plant species and for_ research on animals.In_ with a breakthrough-the cloning of_ the sheep.On t

14、he one hand,the whole scientific world_ the progress of the first successful clone,Dolly the sheep.On the other hand,Dollys appearance raised a storm of_ and had a great_ on the media and public imagination.总结全文，进一步巩固阅读效果。Post reading:Practice activity:Debate Are you in favor of or against cloning h

15、uman?What is your point of view on it?设计针对性的讨论话题，巩固科课文理解，培养学生正确对待克隆的观点。Homework 1.Translate the procedure of cloning Dolly the sheep into Chinese.2.Finish the Ex.1,2,3 on Page13.1.学生经过高中阶段前几册的学习，具备了一定的阅读技能，如查找细节信息，猜测词义，抓住段落要点和全文大意等，在阅读速度方面也有了较大提高，这有助于学生更好的完成这个单元的课文阅读任务。2.这个单元的话题是克隆，对于学生而言应该比较感兴趣，所以相

16、关的阅读任务能够乐于完成。3.学生在这个单元的学习过程中需要用到预习策略，搜集分析信息策略等。效果分析 在讲完这节课内容之后，我有这样几点反思：一成功之处。1、设计思路明晰。本节设计由潜入深，通过图片展示学生们都喜欢的草莓，以及班里双胞胎姐妹的图片引起学生们的兴趣，导入本单元话题。接下来学生们能积极参与到各个学习环节中去。课件生动直观，加深了学生学习英语的兴趣，认为英语不再是课本上枯燥的没有生命力的文字，而是一种鲜活的动态语言。设置的任务给了学生一定的情境,让他们在真实的情境中去体验和感悟,并由此来获取并运用语言,这种教学重视学习主题的直接经验，具有独特的教学效果。课结束后,我引导学生对本节内

17、容进行总结,这样在他们大脑中就会对所学的知识有一个总体的把握,并且可以对课前提出的问题进行检测:是否已经解决了问题?2、重视教学过程的评价，及时鼓励学生。我认为只有促使学生从一个成功走向另一个成功，学生才能体会到学习的乐趣和成功的喜悦，也只有这样，学生学习英语的兴趣才能长久保持。因此我在教学中多给奖励的话语，使学生情绪高涨,始终以饱满的热情参与课堂的学习。二、不足之处。任务设计单一化。备课时应考虑更全面,注意学生的已有知识和兴趣点,设计更为实用的任务链。以上是我对自己一节课的反思。要讲好课需要不断的完善和及时的反思。新课程改革对教师的能力提出了更高的要求。我们不仅是学生记忆的激活者,也是示范者

18、,更是课堂教学的组织者、指挥者。因此我要更加努力探究教学理论，在实践教学中不断反思完善自己教学水平,争取有更大的提高。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 提供了四幅有关 Dolly the sheep(多莉羊)，A strawberry plant(草莓植物)，Identical dogs(克隆狗)，Twins（双胞胎婴儿）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

19、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 Comprehending 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

20、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，Discussingand writing 要求学生先读,然后再完成四个任务型的作业，即 1.讨论并回答三个问题；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。Reading comprehensio

21、n:Hello,Dolly!British scientists have done something that many people thought was impossible:they created the first clone of an adult mammal.The clone,named Dolly,is a seven-month-old sheep,grown from a cell of an adult female sheep.What is a clone?A clone is a copy,a genetic copy.Genes are the inst

22、ructions for life.They tell a cell what to do and how to do it.Genes make each individual plant or animal different and unique.But a clone has the same genes as the original organism.Cloning is not new.Plants have been cloned for centuries.New plants are often grown from cuttings from another plant.

23、Also,plants like pineapples,strawberries and carnations are sometimes cloned.One benefit of cloning is that we can make many copies of the best and healthiest plants.It has been much more difficult to clone animals.Frogs have been cloned,but they died as tadpoles,never living long enough to become a

24、dult frogs.Mice,sheep and cattle have been cloned from embryos.But Dolly is the first healthy clone of an adult mammal.How did they do it?(1)An unfertilized egg was taken from a sheep.(2)The egg nucleus was removed.(3)A cell was taken from the udder of a pregnant sheep.It was“starved”,so that it sto

25、pped growing.(4)The two cells were combined into one and then implanted in a third sheep,where it grew normally.(5)The clone was born.It was genetically identical to the pregnant sheep in step(3).This sounds much easier than it actually was.To end up with one clone,the scientists started with 277 ud

26、der cells.And they needed in a way to make the egg cell accept a new nucleus.They did that by starving the cell in step(3).It may soon be possible to clone many types of animals.Will we also be able to clone human organs,or even whole human beings?We have only begun to think about the morality of cl

27、oning technology.Maybe the question to ask is not whether we can clone humans,but instead,should we clone humans?1.Dolly is a sheep because she is grown from a cell of an adult female sheep _.A.that has not her father B.that has not her mother C.that has no parents D.that has not any tail 2.Tell whi

28、ch of the following statements is TRUE.A.Only plants can be cloned.B.Only strawberries and carnations can sometimes be cloned.C.Animals and plants have quite a long history of cloning.D.Genes can tell a cell what to do and how to do it during cloning.3.From the fourth paragraph we can know that _.A.

29、a tadpole is the early stage of a grown-up frog B.a tadpole is a frog without a tail C.a tadpole is a pool where frogs can live D.a tadpole is a clone of an adult mammal 4.What is the right order in the process of the clone of Dolly?a.Taking an unfertilized egg from an adult female sheep.b.Removing

30、the eggs nucleus.c.Combining the two cells into one and then implanting it in a third sheep.d.Taking a cell from the udder of a pregnant sheep.A.a b c d B.c a b d C.a b d c D.d c b a 答案与分析 本文是科普时文阅读。全文讲述了克隆羊多莉的出生过程。1.C 从文章中可以看出，多莉是从一只成年羊的细胞中克隆出来的，所以它根本没有父母，而是那只羊的一个翻版。A项“它没有父亲”、B项它没有母亲说得太片面，D项“它没有尾巴”

31、不符合题意。2.D 题意为“下面哪句话是对的”，D项“基因在克隆过程中可以告诉细胞做什么及如何去做”，文中第二 段正是说的这个意思。第三段指植物可以克隆，第四段指动物也可以克隆，所以选项 A“只有植物可以克隆”不正确。从文中第三段可知菠萝也是可以克隆的，所以B项“只有草莓和康乃馨有时可以克隆”不正确。第三段中指植物已有几个世纪的克隆历史，而没有提到动物的克隆历史，所以与 C项“动、植物都有一个相当长的克隆历史”与题意不符。3.A 文中第四段第二句中说：人们曾经克隆过青蛙，但在蝌蚪阶段就死了，并没有活到成年青蛙阶段，所以我们可以判断，蝌蚪是青蛙的早期形态，故 A项“蝌蚪是成年青蛙的早期形态”正确

32、。B项“蝌蚪是没有尾巴的青蛙”、C项“蝌蚪是青蛙生存的池塘”、D 项“蝌蚪是成年哺乳动物的克隆体”与实际不符。4.C 题意为“克隆多莉的正确顺序是什么”，从文中第四段后半部分的内容可知，正确顺序应是 C项中所说的。英语阅读策略是在英语阅读过程中，有意识地灵活地运用一系列阅读方法或技能的阅读学习过程和调控阅读环节的操作过程。为了提高阅读理解能力，学习者要形成有效的阅读策略，克服不良的阅读习惯。常见的阅读策略有略读，找读，词意猜测，推理判断等。一节课上下来，我基本如期完全实现所制定的目标。学生的阅读策略得到训练。这节课的各个教学环节比较清晰，有三个环节 Pre-reading,while-read

33、ing,post-reading.在 Pre-reading 部分，通过展示学生们都喜欢的草莓，以及班里双胞胎姐妹的图片引起学生们的兴趣，导入本单元话题。接下来学生们能积极参与到各个学习环节中去，最后为学生创设了自由、宽松和活泼的讨论氛围，以充分调动学生学习的积极性，激发学生学习兴趣。不过，也还有不尽如人意之处，有几个学生在小组合作学习态度消极，参与性不高，这需要我去思考如何将小组合作的活动安排更合理更科学，让人人都喜欢参与，愿意参与。阅读是一个语言与思维相互作用的过程。高中英语阅读课教学虽然没有固定的教学模式，但都有其内在的规律。实践证明，教师只有树立以学生为主体的思想，精心设计阅读教学过程，充分调动学生参与阅读的积极性，采用师生平等互动和生生互动的阅读教学策略，培养他们综合运用语言的能力，英语阅读课教学才能焕发活力。根据英语课程标准，培养学生的阅读能力是高中英语教学的重要目标之一。为了