usinglanguage.ppt

cloning,Welcome,Whataretheadvantagesofcloning?,Haveplantsofsimilarqualitytosell.Usefulforresearchonnewplantspecies.,Makeendangeredspecieskeepon.,Helpfamilieswhowanttohaveachild.,Havecuresforseriousillnessesinhumans.,Revision,1.Doyouknowanythingaboutdinosaurs?2.HaveyoueverseenthefilmJurassicPark?,1.Canyouseetheminourreallife?Why?2.Doyouthinkitispossibletoclonedinosaurs?Ifyes,doyouthinkthatsgoodforhumanbeings?Why?,Thereturnofthedinosaurs?,Teachingaims教学目标,1.Understandthepassageandknowmoreaboutthecloningofdinosaursandtheproblem.（理解文章，了解恐龙的克隆及存在的问题。）,2.Usetheirownwordstoexplainthereasonwhythedinosaurscantbeclonedsuccessfuland(用自己的话来解释恐龙不能被成功克隆的原因)3.Listthereasonstobringoneofthefourextinctanimalsbacktolife(在四种灭绝动物选出最应该被克隆的动物并且列出原因),自学目标1understandthepassage,自学建议：1.获取文章大致信息2.第一遍快读了解故事大意3.第二遍细读获取细节信息自学禁忌：1.一口气从头一字一句读到尾，2.见到生词就查字典自学时间：5分钟,Thewriterofthetext_A.isexcitedbythepossibilityofcloningfierceandextinctanimalsB.believesthatextinctanimalscanbebroughtbacktolifebycloningC.thinksitimpossibleorunsuitabletocloneextinctanimalslikedinosaursD.dreamsofdinosaursreturningtotheearth,Listentothetext,thenchoosethecorrectanswer.,Listening,Task1,Whatsthemainideaofeachparagraph?,Para1explaintheimpossibilityofcloningdinosaursPara2concludethatitsjustadreamPara3introducethetopicofthepassage,finsish,Readthetext,thentellwhetherthefollowingsentencesaretrueorfalse.(Studentscandiscussinpairs.),2.Scientistsarestillexperimentingwithcloningmammalsbecausetheythinkitcanmakemoney.,Task2,FillintheblanksortellTrueorFalse,1.Thepopularityoffilmssuchas_,inwhichascientistclonesseveralkindsof_dinosaurs,proveshowtheidea_amixtureof_.,JurassicPark,extinct,struck,fearandexcitement,intopeoples,hearts.,thecloningof,mammalsisstillanewscience.,Theanimalsthathavedisappearedfromtheearth,likedinosaurs,canbebroughtbacktolifethroughcloning.,Para2,Unfortunately,withwhatweknownow,thisiseitherimpossibleorunsuitable.,Evidence:,2.The_isthatyouneedperfectDNA.3.All_ofcloningananimalwillbe_ifthereisnotenough_inthegroupto_.,initial,efforts,invain,diversity,requirement,overcome,illnesses,Givesomereasonswhyitiseitherimpossibleorunsuitabletoclonedinosaurs.,Reason1:Reason2:Reason3:,DNADiversityHabitat,Task3,自学目标2useyourownwordstoexplainthereasonswhydinosaurscantbecloned,Advantage:,anewillnesssomedie.,otherssurviveandpassontheabilitytoresist,Drawback:,thesamearrangementofgenesdieof,Conclusion:,Thechanceofdinosaurseverreturningtotheearthismerelyadream.,title,Adream,Evidence:,GreatAuk(1844),Auroch(1627),Dodobird(1755),Quagga(1883),Theseanimalsareextinctones.Whichoneshouldbebroughtbacktolife?Andwhy?Discusswithyourpartner.Theexampleonthetextbookmighthelpyou.,Discussion,PK,讨论建议:1.通读四种已灭绝动物的信息。2.挑选出自己认为最应该克隆的动物。3.仔细阅读该动物的相关信息，展开大胆联想，给出原因来阐述为什么这种动物最适合被克隆，能够带来什么样的好处。4.互相比较选择的动物，陈述各自的观点。讨论时间：5分钟,自学目标3discussandlistthereasonsforwhichextinctanimalshouldbecloned,GreatAuk(1844),Aurochs(1627),Dodobird(1755),Quagga(1883),Discussion,PK,0,30,60,120,90,Finish,Writing,Letsbringthebacktolifeisthemostsuitableanimaltobebroughtbacktolife.Herearethereasons：Firstly,Secondly,Finally,SoIthinkwouldbethebestchoicetobebroughtbacktolife.,Writing,LetsbringthegreataukbacktolifeThegreataukisthemostsuitableanimaltobebroughtbacktolife.Herearethereasons：Firstly,itsfeathersdontabsorbwater,soitsusefulforprotectingclothesfromwater.Secondly,farmerscankeepitaschickentoearnmoney.Finally,itbecameextinctrecently,thereforeitsDNAisstillingoodcondition.SoIthinkthegreataukwouldbethebestchoicetobebroughtbacktolife.,Writing,LetsbringthedodobacktolifeThedodoisthemostsuitableanimaltobebroughtbacktolife.Herearethereasons：Firstly,itsfriendlyandnotharmful,sowecankeepitaspetforchildren.Secondly,itslargeeggsandtastymeatcouldbedevelopedforfood.Finally,farmerscansellitsfeathersasdecoration.SoIthinkthedodowouldbethebestchoicetobebroughtbacktolife.,Writing,LetsbringtheaurochsbacktolifeTheAurochsisthemostsuitableanimaltobebroughtbacktolife.Herearethereasons：Firstly,ithasthickhair,andwecanuseitshairtomakeclothes.Secondly,itslonghornscanbeusedfordecoration.Finally,itsverylargeandstrong,thereforewecanmakeithelpfarmersploughthefield.SoIthinktheaurochswouldbethebestchoicetobebroughtbacktolife.,Writing,LetsbringthequaggabacktolifeThequaggaisthemostsuitableanimaltobebroughtbacktolife.Herearethereasons：Firstly,ithasbeautifulskinasazebra,sowecanuseitsskinasdecoration.Secondly,themeatisverytasty,andwewillhaveanotherdeliciousdish.Finally,itjustbecameextinctin1883,thereforewecaneasilygetitsperfectDNA.SoIthinkthequaggawouldbethebestchoicetobebroughtbacktolife.,教学目标再现,1.Understandthepassageandknowmoreaboutthecloningofdinosaursandtheproblem.（理解文章，了解恐龙的克隆及存在的问题。）,2.Usetheirownwordstoexplainthereasonwhythedinosaurscantbeclonedsuccessfuland(用自己的话来解释恐龙不能