unit 3 science versus nature 教学设计 2

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1、Unit3ScienceversusNature教学案2课题Unit3Scienceversusnature课时主备人授课时间教学目标Enablethestudentstoknowsomethingaboutcloning，andgivetheirownopinionsaboutcloning.Helpthestudentslearnhowtodescribetheadvantagesanddisadvantagesofhumancloningwiththetargetlanguage.教学重难点Talkaboutcloningandhumancloning.Howt

2、odescribetheadvantagesanddisadvantagesofhumancloning.教学具Aprojector.预习要求教师活动内容、方式学生活动内容、方式旁注StepILead-inWalkintotheclassroomwithasadface.T:Goodmorning，class.Ss:Goodmorning，MissWang.T：What’sclone？S1:Cloningisoneofthemostpopulartechnologiesinthe20thcentury.T：Whatothertechnologiesdowehavein

3、recentyears？S:Maybethemostinfluentialtechnologyiscomputerscience，whichhascontributedalottooursocietyinmanyfields.Now，formostofus，wecan’tlivewithoutcomputers.T:Youareright.Justnowyoumentionedcloning.Nowlet’sseesomepictures.Showthepicturesonthetextbookonthescreen.StepIIWelcometotheunitT:H

4、erearesixpictures.Theyareallclones.MaybeallofyouarefamiliarwithDolly，aren’tyou？Ss:Yeah.T:WhereandwhenwasDollyborn？Isshestillalive？WhocangiveussomeinformationaboutDolly？S:DollythesheepwasbornonFebruary24，1997inEdinburghScotland.Shewasclonedfromacellofanothersheep.DollydiedinFebruary，2003

5、，afterdevelopingaprogressivelungdisease.StepIIIDiscussionDealwiththequestionsinactivityF.Severalminuteslater，asksomepairstodemonstratetheirconversations.Wecan’tattempttochangesomethinginthenature，orwe’llbepunished！Soweshouldtryourbesttobuildasocietyinharmonywithnatureinsteadofagainstnat

6、ure.StepIVHomeworkPreviewthetextonP42.SearchtheInternetforinformationaboutcloning