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，激发阅读兴趣。(2

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.targetlanguage （目标语言）a important words and expressionsclone, commercial, producer, undertake, arbitrary, object, forbid, accumulate, cast down, object to

3、, the media, in favour ofb important sentences1) but at last the determination and patience of the scientists paid off in1996 with a breakthrough-the cloning of dolly the sheep.2) altogetherdollylivedsixand a halfyears,half the length of the life of the original sheep.3) the fact that she seemed to

4、develop normally was very encouraging.4) then came the disturbing news that dolly hadbecome seriously ill.2.ability goals（能力目标）enable the studentsto describecloning:what is theadvantages of cloning? what is the problems ordangers of cloning?what is youropinionof cloning?3.learning ability goals（学能目标

5、）help the students learn how to describe cloning.三 teaching important points（教学重点）how to describe cloning.四 teaching difficult（教学难点）help the studentsanalyzethe writingtechniquesof thearticle.五 teaching methods（教学方法）skimming, task-based method and debate method.六 teaching aids（教具准备）a recorder, a proj

6、ector and some slides.teaching procedures & waysstep lead-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 th

7、eydiffer.student:I thinkthe twinsand a strawberryplantare natural clones; the dolly sheep and growingnew plants are man-made.after several minutes, teacher ask some questions andlet students answer these questions.teacher: 1. dolly the sheep. It s the mostfamous sheep in the world.do you know how do

8、llyis different 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 the plant?stude

9、nt:a gardener.and the gardenerisgoingto 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 appearance and are goodexam

10、ples of natural clones. they carry the same genetic information. the fertilized egg hassplit into two while inside the mother, and so produced two identical human babies.steppre-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。before class, ask th

11、e students to search for some 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 when humans are clon

12、ed? suggest answers:1. a clone is an animal or plant produced naturally or artificially from the cells of another animal or plant and is exactly the same as it.2.thecloningof plantsis simpleand relativityeasy.itcan be done by takingcuttings(man-made cloning)orlettingtheplantproduce itsown runners(na

13、turalcloning).thecloningofanimalsis more complicated.itwas notachieved until1996and is fullyexplainedin the first reading.3.1) medicalcloningcan helpcure seriousillnessesthatruinone s qualityof life(such as parkinson s disease帕金森症 or alzheimer s disease老年痴呆症 ).2) it can help infertile people have ba

14、bies.4. 1) people may want to clone themselves so they can live forever.2) people may want to clone dead children.3) people may want to clone their favorite pets.stepwhile-readingteacher:now let s listen to the tape. then iwill give you 20 minutes to read this passageagain. while reading , you shoul

15、d finish thefollowing three tasks.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。para1. cloning is a way of making an exact copy ofanother animal and plant.para2. cloning has two major uses.para3. the birth and death of dolly.

16、para4. the effect of dolly.para5.it is forbidden to clone human beings.task 2blanks.read the text carefully and fill in the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。definition cloning is a way of making another animal and plant.an exact copyof

17、gardeners use it toproduce commercialmajor uses of quantities of plants.cloning itis valuableforresearchon new plantand formedicalresearch on animals.species encouraging news: dolly seemed to develop normally. disturbing news: dolly lived only six and a half years, half the length of the life ofabou

18、t dollythe sheepthe original sheep, because of serious illnesses which were more appropriate to a much older animal. evil leaders hoped to clone themselves to attaindifferent opinions on cloningtheir ambitions. religious leaders raisedmoral questions. some governmentsforbaderesearch into humanclonin

19、g but other countries like china and theuk, continued to accumulate of theabundant evidencemedicalaid thatcloningcouldprovide.task 3choose 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 main idea of the textis_a.animal cloningis very valuableand can benef

20、ittheworld.b. animal cloning could be misused by bad people so it must be forbiddenc.animalcloningis welldevelopedbecause dollythe sheep wasborn.d. animal cloning raised arguments and scientists are not sure about its future.2). _ is used in the procedure for cloning dolly the sheep.a. the nucleus o

21、f sheep ab. the somatic cell of sheep ac. the nucleus of sheep b d. the embryo of sheep c3). the cloning of dolly the sheep succeeded because_.a. its easier to clone a sheep than other animalsb. the scientists weredetermined and worked hard with patiencec.the scientistswere rewarded and got lotsofmo

22、neyd. many other attempts to clone mammals failed 4). the lamb is the clone of the cell from sheep because_.a. it provides the eggcell b. it gives birth to the lambc.it providesthe nucleusa female sheep5). dolly the sheep-.a. looked exactly like the sheep that provides the eggb. was the exact copy o

23、f the sheep that provides thenucleusd.itisc. looked like the sheep that gave birth to it d. had the characteristics of all three sheep6). 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 onec. usually di

24、es 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 medical aid. c. a woman would have difficulty recognizing her real husband.d. men will die out because a woma

25、n can give birth to a baby without a husband8). the sheep that donated the somatic cell mostprobably lived _years.a. 3b. 6c. 12d. 139). which of the following is not an advantage of cloning?a. cloning can be used for medical purposes.b. largequantitiesof food can be produced by cloning.c. famous per

26、sons 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. difficultsteppost-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

27、。exercise 1 the following statements are about cloning. read them and decide if they are trueor false.writethe letter“ t ” ifthe statementis 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 by cloningplants.(t)3). cloning

28、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 2read the passage again and answer thesequestions.1). what are the two major uses of cloning?2). why is it easier to mak

29、e commercial plant clones than animal clones?3). what was the first clone from an adult animal? at what age did this clone die?4). why is cloning controversial in some countries?steplanguage 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. 有“同一的，同 的”的意思eg