英语微课教学设计

1、英语微课教学设计一.教材分析1.教学内容本单元的中心话题是“克隆”， 学生通过讨论和阅读有关 克隆的内容，了解克隆的含义、克隆的技术发展、克隆对 人类带来的好处以及人类对克隆这一问题的争议。阅读部分介绍了植物与动物克隆的区别、多莉羊的诞生与死亡以及由此引发的争论。 帮助学生进一步认识克隆的意义在于 解决医学上的难题，为人类服务。1.教材处理本科结合教材的实际对教材内容、编排顺序等进行了调 整、删除和补充，把阅读前、阅读中和阅读后三部分有机 整和起来。(1)导入新颖，激发兴趣。“读前阶段”通过图片导入的 形式，激活学生大脑中的图式。同时，结合标题预测，使 学生对即将阅读的内容有一定的预测，激发阅

2、读兴趣。(2)循序渐进、创意安排。“读中阶段”引导学生进行语 篇的整体感知，了解课文的概况；培养学生同义转换及归 纳概括的能力。(3)适度拓展、开发思维。“读后阶段”拓展学生的发散 性思维，在训练学生阅读技能的基础上了解克隆这门生物 技术以及有关的争议。二.teaching goals（教学目标）1.target language（目标语言）a.important words and expressionsclone, commercial, producer, undertake, arbitrary, object,forbid, accumulate, cast down, object

3、 to, the media, in favourofb.important sentences1）but at last the determination andpatience of the scientists paid off in1996 with abreakthrough-the cloning of dolly the sheep.2）altogether dolly lived six and a half years, half thelength of the life of the original sheep.3） the fact that she seemed

4、to develop normallywas very encouraging.4） then came the disturbing news that dolly hadbecome seriously ill.2.ability goals（能力目标）enable the students to describe cloning: what is the advantagesof cloning? what is the problems or dangers of cloning? what isyour opinion of cloning?3.learning ability go

5、als（学能目标）help the students learn how to describe cloning.how to describe cloning.四.teaching difficulthelp the students analyze the writing techniques article.五.teaching methods（教学方法）skimming, task-based method and debate method.六.teaching aids（教具准备）a recorder, a projector and some slides.teaching pr

6、ocedures & ways stepilead-in设计意图导入部分由两个步骤组成：1.首先让学生观看有关克隆动物和植物的图片。通过图片，学生们立刻领悟了本课的主题，并带着兴趣开始观看。2.学生在体验中产生探究的兴趣后，为了启发学生思考，设计了四个问题，以激发学生的思维。teacher:in pairs, look at these pictures anddiscuss which ones are natural clones and whichones are man-made. think about how theyteaching important points（教学

7、重点）（教学难点）of thediffer.student:I think the twins and a strawberry plantare natural clones; the dolly sheep and growing new plantsare man-made.after several minutes, teacher ask some questions andlet students answer these questions.teacher: 1. dolly the sheep. Its the mostfamous sheep in the world. do

8、 you know how dolly isdifferent from other sheep?student:she was cloned while the others were bornnaturally. it is the copy of another sheep.teacher:2. what can you see in the picture?student:I can see a strawberry plant producingrunners in a natural form of cloning.teacher: 3. who cut the stem off

9、the plant?student:a gardener. and the gardener is goingto put it into a pot to produce another plant.he is actually making a copy of the plant.teacher: 4.what do you know about twins?student:there are twins of the same sex andthose of different sexes. the twins here areidentical in sex and appearanc

10、e and are goodexamples of natural clones. they carry the same geneticinformation. the fertilized egg hassplit into two while inside the mother, and so produced twoidentical human babies.step ii pre-reading设计意图通过阅读文章标题，引导学生对课文内容进行预测，调动学 生已有的背景知识，使其产生阅读的兴趣，快速进入阅读状 态。然后让学生通过快速阅读来验证自己的预测，使自身处 于一种主动认知的状态

11、。before class, ask the students to search forsome information about this topic. now show myquestions on the screen, and then let them discuss with each other.questions about cloning:1. what is a clone?2. how is a clone produced?3. what benefits can humans gain from cloning?4. what problems may arise

12、 when humans are cloned? suggestanswers:1. a clone is an animal or plant produced naturallyor artificially from the cells of another animal orplant and is exactly the same as it.2. the cloning of plants is simple and relativity easy. it can bedone by taking cuttings (man-made cloning) or letting the

13、 plantproduce its own runners (natural cloning). the cloning of animalsis more complicated.it was not achieved until 1996 and is fully explained in the firstreading.3. 1) medical cloning can help cure serious illnesses that ruinones quality of life (such as parkinsons disease帕金森症oralzheimers disease

14、老年痴呆 症).2) it can help infertile people have babies.4. 1) people may want to clone themselves so they canlive forever.2) people may want to clone dead children.3) people may want to clone their favorite pets.step iii while-readingteacher:now lets listen to the tape. then iwill give you 20 minutes to

15、 read this passageagain. while reading , you should finish the following threetasks.task 1summarize the main idea of each paragraph.设计意图学生通过略读本文，快速找出每段的主题句，从整体上把握 文章内容，不但了解此类型文章的篇章结构，学习此类型文 章的写作，而且便于下一步查读。para 1. cloning is a way of making an exact copy of another animaland plant.para 2. cloning has

16、 two major uses.para 3. the birth and death of dolly.para 4. the effect of dolly.para 5. it is forbidden to clone human beings.task 2read the text carefully and fill in theblanks.设计意图学生个人先通过查读，快速找到特定信息，然后小组组员之 间交流各自的答案，有疑义的地方，经过讨论，最终确定答 案。这不仅让学生了解文章的具体内容，而且培养学生阅读 的能力和互帮互助的团队合作精神。 cloning is a way of

17、 making an exact copy ofanother animal and plant.gardeners use it to produce commercialof quantities of plants.it is valuable for research on new plant species and formedical research on animals.encouraging news: dolly seemed todevelop normally. disturbing news: dolly lived only six and ahalf years,

18、 half the length of the life ofthe original sheep, because of serious illnesses which weremore appropriate to amuch olderanimal.definitionmajor usescloningabout dollythe sheepdiffere ntopinions oncloning evil leaders hoped to clone themselves to attain theirambitions.religious leaders raisedmoral qu

19、estions. some governments forbade research into human cloningbut other countries like china and the uk, continued toaccumulate of theabundant evidence medical aid that cloning could provide.task 3 choose the best answer.设计意图在阅读的过程中，让学生结合文章对这些问题进行 思考。一方面，可以培养学生的综合阅读能力，另一方面， 加强学生对文章的进一步理解。1) . the mai

20、n idea of the textis_a.animal cloning is very valuable and can benefit theworld.b. animal cloning could be misused by bad peopleso it must be forbiddenc.animal cloning is well developed because dolly the sheep wasborn.d.animal cloning raised arguments andscientists are not sure about its future.2)_.

21、is used in the procedure for cloning dollythe sheep.a. the nucleus of sheep ab. the somatic cell of sheep ac.the nucleus of sheep bd. the embryo of sheep c3)_. the cloning of dolly the sheep succeeded because.a. its easier to clone a sheep than otheranimalsb.the scientists weredetermined and worked

22、hard with patiencec. the scientists were rewarded and got lots ofmoneyd. many other attempts to clone mammals failed4) . the lamb is the clone of the cell from sheepcellb. it gives birth to thelambc. i t provides the nucleusd. it isa female sheep5)- . dolly the sheep.a. looked exactly like the sheep

23、 that provides the eggb. was the exact copy of the sheep that provides the nucleus13c. looked like the sheep that gave birth to itd. had the characteristics of all three sheep6) . it can be inferred from the passage that a clonedanimal- .a. usually lives as long as the original oneb. usually lives l

24、onger than the original onec.usually dies earlier than the original oned. is usually as healthy as the original one7) . which of the following is wrong?a. cloned people would live forever.b. cloned people may be killed at will for medicalc. a woman would have difficulty recognizing her real husband.

25、d.men will die out because a woman can give birth toa baby without a husband8). the sheep that donated the somatic cell mostprobably lived_years.a. 3b. 6c. 12d.9) . which of the following is not an advantage ofcloning?a. cloning can be used for medical purposes.aid.b. large quantities of food can be

26、 produced by cloning.c.famous persons who have passed away can be cloned.d. cloning can help keep animals from becoming extinct.10). in the second paragraph, the word“ straightforward”means_.a. uncomplicatedb. honestc.frankd. difficultstepivpost-reading设计意图学生已经通过略读、查读和细读，抓住了文章脉络，理解了 文章内容。在此基础上，要求更深一

27、步理解文章，因此设计了几道习题，进一步培养和考察学生的阅读理解能力。exercise 1 the following statements are about cloning. read themand decide if they are true or false. write the letter“t”if thestatement is true. write“f”if it is false.1) . cloning means making a copy of an animal or aplant.(f)2) . gardeners can make a lot of money

28、 by cloningplants.(t)3) . cloning animals is as complicated as cloningplants.(f)4) . dolly the sheep was the first successful clone ofa mammal. (t)5) . natural clones happen in animals as well as inplants.(t)exercise 2 read the passage again and answer these questions.1) . what are the two major use

29、s of cloning?2) . why is it easier to make commercial plant clonesthan animal clones?3) . what was the first clone from an adult animal? atwhat age did this clone die?4) . why is cloning controversial in some countries?stepvlanguage points设计意图使学生理解和掌握一些重点词汇的用法，进一步培养使用英 语语言的能力，并加深对文章的理解。1. identicaladj.(常与with连用)完全相同的eg. these two designs are almost identical.my opinion is identical with his.allow sb to do sth允许某人做某事还有“同