高中英语导学案与练习Unit 2 Cloning 全单元教案Word文档格式.docx

高中英语导学案与练习Unit 2 Cloning 全单元教案Word文档格式.docx

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I’mhappytoaccept...but...

Iwouldneveraccept...

I’mnotbotheredabout...

Idon’tmindbut...

Ihopeyou’llcarryon...

Areyousureyouwantto...?

Iagreewithyouthat...

Isitfairto...?

Doyouthinkitiswiseto...?

Ithinkyoushould...

Welldonetoyoufor...

Idon’tunderstandwhyyoudon’t...

Ican’thelpthinking...

Icouldneveragreeto...

词汇

四会词汇

Differexacttwincommercialstraightforwardundertakebreakthroughprocedurecarriercastaltogetherarbitrarycorrectionobjectobjectionmediumobtainattainmoralconservativeforbidaccumulateconstitutioncompulsoryoperachorusloafflouroweshortlyretirebotherassumptionregulationstrikeinitialvainresistdrawbackmerelydecorationunablefeatherturkeyclawadorehatchreasonable

2．词组

castdown,objectto,themedia,infavourof，（be）boundto（do）...,fromtimetotime,bringbacktolife,payoff,invain

结

构

Appositiveclause—that可引导同位语从句

重

点

句

子

Itisawayof...P11

Thefactisthat...P11

Thequestionthatoccurred...P12

Theadvantageisthat...P15

Ⅲ.教材分析和教材重组

1.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。

1.1WarmingUp提供了四幅有关Dollythesheep（多莉羊），Astrawberryplant（草莓植物），Identicaldogs（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。

1.2Listening是关于人类克隆的听力材料，难度中等。

1.3Speaking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。

1.4Pre-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。

1.5Reading是一篇介绍克隆技术的说明文。

1.6Comprehending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。

1.7LearningaboutLanguage分词汇和语法两部分，其中Discoveringusefulwordsandexpressions是根据语境在运用中掌握词汇。

Discoveringusefulstructures是通过阅读和补全句子来练习。

1.8UsingLanguage中的Reading，Discussingandwriting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.Listeningandspeaking让学生根据所听到的内容选择并列出文中人物观点。

2．教材重组

2.1从话题内容上分析，WarmingUp与Reading相一致，而从训练目的上分析WarmingUp与TALKING比较一致。

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

（一）（精读课）”。

2.2将Listening和Workbook中的LISTENING整合在一起，设计成一节“听力课”。

2.3将UsingLanguage与Workbook中的TALKING和SPEAKINGTASK结合在一起，设计成一节“口语课”。

2.4将LearningaboutLanguage与Workbook中的USINGWORDSANDEXPRESSIONS整合在一起上一节“语法课”。

2.5将Workbook中READINGTASK和PROJECT以及WRITINGTASK整合成一节“泛读与写作课”。

3.课型设计与课时分配

1stPeriodReading

2ndPeriodListening

3rdPeriodSpeaking

4thPeriodGrammar

5thPeriodExtensivereadingandwriting

Ⅳ.分课时教案

TheFirstPeriodReading

Teachinggoals教学目标

1.Targetlanguage目标语言

a.重点词汇和短语

clone,commercial,producer,undertake,arbitrary,object,forbid,accumulate,castdown,objectto,themedia,infavourof

b.重点句子

Itisawayof...

Thefactisthat...

Thequestionthatoccurred...

2.Abilitygoals能力目标

Enablethestudentstodescribecloning:

Whatistheadvantagesofcloning？

Whatistheproblemsordangersofcloning？

Whatisyouropinionofcloning？

3.Learningabilitygoals学能目标

Helpthestudentslearnhowtodescribecloning.

Teachingimportantpoints教学重点

Howtodescribecloning.

Teachingdifficultpoints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

StepILead-in

Thistopicisdifficultforstudents.Soteachershouldhelpthestudentslearnmoreaboutit.Dothisinthewayofaskingandansweringquestions.

T:

Youcanimaginehowrapidlythemodernscienceandtechnologydevelop.Ithinkmostofyoumustknowsomethingaboutspacetraveling,submarineexploration,robot,maglevtrain,geneengineeringetc.Butinrecentyears,ahottopic,cloningisoftenmentioned,especiallywhenthecloningDollythesheepappeared.YoumayhavefirstheardofcloningwhenDollytheSheepshoweduponthescenein1997.CloningtechnologieshavebeenaroundformuchlongerthanDolly,though.Firstthingfirst,whatiscloningandaclone?

Thedictionarysayscloningisthetechniqueofproducingageneticallyidenticalduplicateofanorganism.Acloneissaidtobealldescendantsderivedasexuallyfromasingleindividual,asbycuttings,bulbs,byfission,bymitosis,orbyparthenogenesisreproduction.Itsoundsverydifferentandcomplicatedtous.Infact,Imean,inourdailylife,thishappensoften.Forexample,gardenerstakecuttingsfromgrowingplantstomakenewones.Youoftenseethatyourmotherpicksasmallbranchfromagrowingplanttomakeanewone.Ifshelikesthiskindofflowers,shecandocloning.Cloningalsohappensinanimalsorhumanbeingswhentwinsidenticalinsexandappearanceareproducedfromthesameoriginalegg.Thefactisthatcloningplantsisstraightforwardbutthecloningofanimalsismorecomplicated.Thepossibilityofhumancloning,raisedwhenScottishscientistsatRoslinInstitutecreatedthemuch-celebratedsheep“Dolly”,arousedworldwideinterestandconcernbecauseofitsscientificandethicalimplications.Youcangiveyourquestionsifyouareinterestedinthistopic.Iamheretodayoneofthescientistswhoworkinthisfield.Iamreadytoansweranyofyourquestions.

S:

Nowweknowwhatiscloning.Aretheredifferenttypesofcloning?

Whenthemediareportoncloninginthenews,theyareusuallytalkingaboutonlyonetypecalledreproductivecloning.Therearedifferenttypesofcloninghowever,andcloningtechnologiescanbeusedforotherpurposesbesidesproducingthegenetictwinofanotherorganism.Abasicunderstandingofthedifferenttypesofcloningiskeytotakinganinformedstanceoncurrentpublicpolicyissuesandmakingthebestpossiblepersonaldecisions.Thefollowingthreetypesofcloningtechnologieswillbediscussed:

（1）recombinantDNAtechnologyorDNAcloning,

（2）reproductivecloning,and（3）therapeuticcloning.

WasDollycreatedbywhatcloning?

AndwhywasDollysoimportant?

ReproductivecloningisatechnologyusedtogenerateananimalthathasthesamenuclearDNAasanothercurrentlyorpreviouslyexistinganimal.Dollywascreatedbyreproductivecloningtechnology.ShewasthefirstmammaltobeclonedfromadultDNAtakenfromanadultcell.Previously,animalshadonlybeenclonedusingembryocellswhichalreadyhavethepotentialtobecomeacompleteembryoinitsownright.ThebigbreakthroughwithDollywastomakeaclonefromanordinary,adultcell—inthiscasefromafemalegoat’sudder.

HaveyouseenJurassicPark?

Inthisfeaturefilm,scientistsuseDNApreservedfortensofmillionsofyearstoclonedinosaurs.Theyfindtrouble,however,whentheyrealizethattheclonedcreaturesaresmarterandfiercerthanexpected.Couldwereallyclonedinosaurs?

Intheory?

Yes.Whatwouldyouneedtodothis?

Awell-preservedsourceofDNAfromtheextinctdinosaur,andacloselyrelatedspecies,currentlyliving,thatcouldserveasasurrogatemother.Inreality?

Probablynot.It’snotlikelythatdinosaurDNAcouldsurviveundamagedforsuchalongtime.However,scientistshavetriedtoclonespeciesthatbecameextinctmorerecently,usingDNAfromwell-preservedtissuesamples.

Morequestionsaboutcloningaregivenintheappendix.Theinformationaboveisforreferenceonly.Oryoucanchooseseveralstudentsandaskthemtoactoutashortplaywhosemaintopicisasfollows:

Anoldmanwhowasdyingleftallhisfortunetohisownson.Buthedidnotknowthathissonwascloned.Sotwosameyoungmenbothclaimedthattheyweretheoldman’sson.Theyquarreledandfoughtwitheachother;

atlasttheywenttothejudge.ThejudgeletthemcheckDNA.TheresultwasthattheirDNAwasthesame.Noweventhejudgedidnotknowwhattodo.

Inthisparttheteachercangivethestudentssomeadvicetoactout.Accordingtothisplayteacheraskthestudentsseveralquestions:

1.Doyouwanttobeclonedornot?

Why?

2.Ifyouarethejudgewhatwillyoudo?

3.Canyoutellmetheadvantagesofcloning?

4.Andwhatisthedisadvantage?

Discussion

Inthispartthestudentswilldiscusstherelationshipbetweenthedevelopmentoftechnologyandsocialcustoms.

Asthetechnologydevelopsdaybyday,ithasamoreandmoreimportantinfluenceonthewholesociety.Technologyaffectssocialcustomsandethics,sometimestechnologymaygoagainsttheconventionalthinking,thencomestheproblemthatwhetherweshouldstopthedevelopmentofresearchorchangetheethics.

S1:

Astechnologydevelopsinalmosteveryfield,alotofouroriginalcustomsandethicschanged,eitherbecausetheyareoutoftimeornotsoscientific.Forexamplemillionsofyearsagohumanatemeatofanimalswithoutheatingthem.Laterpeopleusedfireandnolongeraterawmeatandtheyalsousedfiretoscaredangerousanimals.

S2:

Ithinkwecouldnotstopthedevelopmentoftechnology,foritmaydevelopinthewaywhichisacceptablebysocialcustoms.

…

Lookatpictures

Lookatthepicturesanddiscusswhichonesarenaturalclonesandwhichonesareman-made.Thenexplainhowtheydiffer.

IthinkthetwinsarenaturalclonesandtheDollysheepisman-made.

Youareright!

Canyouexplainhowtheydiffer?

Thetwinswerebornatthesametime,buttheDollysheepisman-made.

Anythingelse?

Whowanthaveatry?

Ithinktheidenticaldogisman-made.

Goodjob!

StepⅡPre-reading

Beforeclass,askthestudentstosearchforsomeinformationaboutthistopic.Nowshowyourquestionson