Unit2-Cloning教学设计

Unit2CloningReading:CLONING:WHEREISITLEADINGUS?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:WHEREISITLEADINGUS?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，为人类服务。从话题内容上分析，WarmingUp与Reading相一致，从教材份量来说，可将WarmingUp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Teachinggoals1.Targetlanguage目标语言a.重点词汇和短语clone，commercial，producer，undertake，arbitrary，object，forbid，accumulate，castdown，objectto，themedia，infavorofb.重点句子Itisawayof….Thefactisthat….Thequestionthatconcernedallscientistswere:….2.Abilitygoals能力目标Enablethestudentstodescribecloning:Whatistheadvantagesofcloning？Whatistheproblemsordangersofcloning？Whatisyouropinionofcloning？3.Learningabilitygoals学能目标Helpthestudentslearnhowtodescribecloning.Teachingimportantpoints教学重点Howtodescribecloning.Teachingdifficultpoint教学难点Helpthestudentsanalyzethewritingtechniquesofthearticle.Teachingmethods教学方法Skimming,task-basedmethodanddebatemethod.Teachingaids教具准备Arecorder,aprojectorandsomeslides.Teachingprocedures&ways教学过程与方式Step1Lead-in（3分钟）Showthreecartoonpicturesaboutcloningtoarisestudents’interests,thenraisethequestion:1.Whatiscloning?2.Doyouwanttobeclonedornot?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。Step2Warmingup（1分钟）ShowthepictureofDollythesheep(多莉羊)onthescreen.Getstudentstolookatthepictureanddiscuss:HowdoesDollydifferfromothersheep?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。Step3Reading（共26分钟）GetthestudentstocomprehendthepassagequicklyandaccuratelyandmeanwhilehelpthestudentsformagoodhabitofreadingTask1.Skimming（6分钟）Askstudentstoskimthepassageandgetthemainideaofeachparagraph..Para1Thedefinitionofcloning.Para2Thetwomajorusesandtheprocedureofcloning.Para3TheproblemofDolly.Para4Theimpactofcloninginsociety.Para5People’sreactiontocloning..Task2.Detailedreading（18分钟）Askthestudentstoreadeachparagraphofthetextcarefullyandanswerthefollowingquestions.(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。)Para1Thedefinitionofcloning.Trueorfalse:1.Cloningisanewtopic.2.Whenagardenertakescuttingsfromgrowingplantstomakenewones,wesaythenewonesarenaturalcloning.3.Cloninghappensbothinplantsandinanimals.Para2Thetwomajorusesandtheprocedureofcloning.1.Theword“straightforward”means______.A.uncomplicatedB.honestC.rankD.difficult2.ThecloningofDollythesheepsucceededbecause____.A.itseasiertocloneasheepthanotherB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailed3.ThelambisthecloneofthecellfromsheepBbecause_____..A.itprovidestheeggcellB.itgivesbirthtothelambC.itprovidesthenucleusD.itisafemalesheepPara3TheproblemofDolly.Atfirst,thefactthatDollyseemedtodeveloped___________was__________.Then,camethedisturbingnewsthatDollybecame_________.AltogetherDollylived__________________,halfthelengthofthelifeof______________.Para4Theimpactofcloninginsociety.1.Ontheotherhand,Dolly’sappearance__________________________and____________________themediaandpublicimagination.2.Theword“controversial”inparagraph4probablymeans____________.A.complicatedB.arguableC.importantPara5People’sreactiontocloning..CharacterTheirownreactionEvilleader:Religiousleaders:Government:Somecountries_______________________________________Othercountries______________________________________.Task3.Furthercomprehension（2分钟）Thewriter’sattitudetowardscloningA.Objective(befair)B.Negative(beagainstit)C.Positive(beinfavorofit)Because_____________________________________________________授课中始终围绕读，以listening,skimming,carefulreading和comprehending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.Retellingthetext（7分钟）Cloningisawayof_______anexactcopyofanotheranimalorplant.Cloninghastwo______uses.Firstly,gardenersuseittoproduceplants.Secondly,itis________formedicalresearchonanimals.Cloningplantsisstraightforwardbutthecloningofanimalsismore__________.Theprocedureisdifficultto_________.In1996,scientistssucceededin_______Dollythesheep.ThencamethedisturbingnewsthatDollywasill.__________Dollylivedforsixyearsandahalf,Dolly’sappearanceraisedastormof_________.Governmentbecamenervousandmany_________researchintohumancloning.Scientistsstill_______whethercloningwillhelporharmusandwhereitisleadingus.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分钟）Asacoinhastwosides,everythinghastwoaspects.Ontheonehand,ifcloningisusedinacorrectwayitcanbringmuchconveniencetous.Ontheotherhand,ifcloningisusedinanevilwayitcancausemuchtrouble.Therefore,weshouldusecloninginawiseway.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