PAGE《Lesson29DNA—TheStoryofYou.》学习目标1.Vocabulary:Masterywordsandexpressions:generally,twin,clone,notonly…butalsoOralwordsandexpressions:blueprint,identical,egg,identify2.Knowhowtowriteapassageonscience.3.LearnsomethingaboutDNA.4.Knowmoreaboutourbody.学习重点1.Masterthewordsandexpressionsofthislesson.2.Theabilityandinability.3.Theuseofcoordinatingconjunctions.学习难点TheuseofDNA.学法指导通过课前预习掌握基本知识，通过合作探究解决较难知识，通过堂达标巩固所学知识。知识准备上节课所学知识课题组补充学习
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复习导入LeadinthetextbydiscussingwhatDNAis.Dividetheclassintoseveralgroups.Thentalkaboutthesubjectforseveralminutes.Thenoneofthegroupspresentstheiropinionsinfrontoftheclass.任务导学Listentothetapeandfillintheblankswiththecorrectwordsyouhear.1.Generallyspeaking,a______isadrawing.2.______foridenticaltwins,eachlivingthinghasitsownuniqueDNA.Playthetapeonce.Thenletthestudentstrytofinishthetaskinclassinoral.Step3.Readingtask:Readthetextquicklyandanswerthefollowingquestions:1.WheredoesyourDNAcomefrom?2.IsyourDNAineverypartofyourbody?Finishthereadingtaskinclassinoral.Trytogetmoreinformationaboutthetextatthesametime.Readthetextagain.Findthesentenceswiththenewwords.Trytocreatesituationaboutthenewwords.Thenmakesentenceswiththenewwords.Ifsomeonecanmakeawholestorywiththenewwordsthatwelearninthislesson,theteachermustencourageher.Thesentenceswiththenewwords:Generallyspeaking,ablueprintisadrawing.Identicaltwinsaretwochildrenthatgrewfromthesameegg.Theyareclones.FromyourDNA,scientistscanidentifynotonlyyou,butalsopeoplerelatedtoyou.达标检测WhatisDNA?WhereisyourDNAfrom?WhatisDNAusedfor?拓展延伸Cometo“LET’SDOIT”.Finishthetaskwithapartner.Findthethingsaboutyouthatshowyourparents’DNA.Talkaboutifforawhile.Thenletsomevolunteerscometothefronttotalkaboutthesubject.小结Let’ssummarizethekeypointsanddifficultpointstogether.作业布置1.Understandthemeaningofthetext2.Rememberthemasterywordsinthislesson.3.Finishtheactivitybookoflesson29.4.Previewthenextlesson30.课后反思
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