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1、英语高二下人教版新课标选修8Unit2第1课时教案TheFirstPeriodReadingTeachinggoals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,infavourofb.重点句子Itisawayof...Thefactisthat...Thequestionthatoccurred...2.Abilitygoals能力目
2、标Enablethestudentstodescribecloning:Whatistheadvantagesofcloning？Whatistheproblemsordangersofcloning？Whatisyouropinionofcloning？3.Learningabilitygoals学能目标Helpthestudentslearnhowtodescribecloning.Teachingimportantpoints教学重点Howtodescribecloning.Teachingdifficultpoints教学难点Helpthes
3、tudentsanalyzethewritingtechniquesofthearticle.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-inThistopicisdifficultforstudents.Soteachershouldhelpthestudentslearnmoreaboutit
4、.Dothisinthewayofaskingandansweringquestions.T:Youcanimaginehowrapidlythemodernscienceandtechnologydevelop.Ithinkmostofyoumustknowsomethingaboutspacetraveling,submarineexploration,robot,maglevtrain,geneengineeringetc.Butinrecentyears,ahottopic,cloningisoftenmentioned,especially
5、whenthecloningDollythesheepappeared.YoumayhavefirstheardofcloningwhenDollytheSheepshoweduponthescenein1997.CloningtechnologieshavebeenaroundformuchlongerthanDolly,though.Firstthingfirst,whatiscloningandaclone?Thedictionarysayscloningisthetechniqueofproducingageneticallyidentica
6、lduplicateofanorganism.Acloneissaidtobealldescendantsderivedasexuallyfromasingleindividual,asbycuttings,bulbs,byfission,bymitosis,orbyparthenogenesisreproduction.Itsoundsverydifferentandcomplicatedtous.Infact,Imean,inourdailylife,thishappensoften.Forexample,gardenerstakecutting
7、sfromgrowingplantstomakenewones.Youoftenseethatyourmotherpicksasmallbranchfromagrowingplanttomakeanewone.Ifshelikesthiskindofflowers,shecandocloning.Cloningalsohappensinanimalsorhumanbeingswhentwinsidenticalinsexandappearanceareproducedfromthesameoriginalegg.Thefactisthatclonin
8、gplantsisstraightforwardbutthecloningofanimalsismoreco
