the first period reading

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1、UNIT2Cloning教案焦秀云TheFirstPeriodwarmingupandReadingTeachinggoals教学目标1.Grasptheimportantwordsandsentencespatternsa.重点词汇和短语clone，commercial，haveagreatimpacton，undertake，appropriate，object，forbid，accumulate，castdown，objectto，themedia，infavourofb.重点句子Itisawayof….Thefactisthat….The

2、questionthatconcernedallscientistsis….2.Abilitygoals能力目标Enablethestudentstodescribecloning:Whatistheadvantagesofcloning？Whatistheproblemsordangersofcloning？Whatisyouropinionofcloning？3.Learningabilitygoals学能目标Knowthedefinitionofthecloneandhelpthestudentslearnhowtodescribeclon

3、ing.Teachingimportantpoints教学重点 DescribleeachpictureandlearncloningTeachingdifficultpoint教学难点HelpthestudentsanalyzetheadvantageanddisadvantageofcloningTeachingmethods教学方法,task-basedmethodanddebatemethod.Teachingaids教具准备aprojectorandsome.pictures TeachingproceduresStepILead-in

4、  Ashortquizetotesthowmuchtheyknowaboutcloning.Showthemsomepicturestoknowtheimportanceoftheclone.Arisetheirinteresttoknowmoreknowledgeaboutclone.Picture1:1)Whatisit?2)Whyisitfamous?Answer:Sheisclonedwhiletheotherswerebornnaturally.ItisthecopyanothersheepPicture2：Whatcanyousee

5、inthe2ndpicture？AstrawberryplantproducerunnersinanaturalwayPicture3：1)Whocutthecuttingofftheplant?2）Whatisthegardenerdoing？HeisputtingthecuttingonthepottoproduceanotherplantPicture4：whatdoyouknowabouttwins?TheyaresameinsexandapparanceandaregoodexampleofnaturalclonesStepIIPre-

6、readingQuestionsaboutclone:1.     What’stheclone?Answer:Cloningisawayofmakinganexactcopyofanotheranimalorplant.Itcanbedividedintonaturalcloneandman-madeclone.Anaturalcloneisonethatoccursinnatureandaman-madecloneisonethatisprocuredthroughhumanintervention(介入，干预).2.     Arethef

7、ollowingclonesthesame?Ifnot,whatisthedifference?Answer:NO.Thefirsttwoareman-madeclones,theresttwoarenaturalclones4.Dollythesheepwasthefirstsuccessfulcloneofamammal5.Naturalcloneshappeninanimalsaswellasinplants.StepⅢAnswerthequestion:1Howmanykindsofanimalshavebeenclonedbesides

8、Dolly?Mouse1998Cow2002horse20032Howiscloneproduced?3Whatbenefitscanh