学人教版选修六Unit 4 global warming reading课件(共30张PPT).ppt

unitfourglobalwarming analysisofthematerials analysisoftheteachingsteps analysisofthestudents analysisoftheteachingaims analysisofteachingmethods analysisoflearningmethods analysisoftheteachingimportance analysisoftheteachingdifficulties analysisofteachingmaterials thelessonisascientificarticleabout globalwarming soitisalittledifficultforthestudentstounderstand butitmainlytellsusthecausesofglobalwarminganddifferentattitudes soit seasytograspthestructure also theenvironmentisahottopicinthenationalcollegeentranceexamination andstudentsshouldlearntoknowwhattodotoprotecttheearth analysisofstudents 1 thetextisintendedforstudentsingradetwo whohavesomeabilitiesoflistening speaking reading andwriting theyneedmoreopportunitiestopracticewhattheyhavelearnedtoexpresstheirideasandfeelings 2 theyarefamiliarwiththetopicandhaveadesiretoexpresstheiropinionsonit teachingaims 1 learntousethe mindmap inreadinganddrawthestructureofthepassage 2 knowthecausesofglobalwarmingandthedifferentattitudes 3 knowhowtoprotectourearth 4 improvethespeakingabilitybyretellingandhavinganeasydebate 5 improvethereadingandwritingabilitiesbyextensivereading teachingimportance 1 knowthecausesofglobalwarmingandthedifferentattitudes 2 drawamindmapofthelesson teachingdifficulties 1 improvethereadingandwritingabilities 2 improvespeakingability teachingmethods 5 pteachingmethod preparation presentation practice production progress teachingmethods 5 pteachingmethod preparation presentation practice production progress learningmethods workingroups discussanddebate antarcticglaciersmelt thesnowintibetamelt polarbearwalkingonthemeltingice whatdothepicturesmakeyouthinkof theearthisgettingwarmer theearthisbecomingwarmer butdoesitmatter reading theearthisbecomingwarmer butdoesitmatter parti partii predict para 1 para7 causes differentattitudes readandfind topicparagraph conclusion para2 5 para6 readingtipswhenyoureadanarticle youshouldpayspecialattentiontothetitle thefirstparagraph whichcangiveyousomeimportantinformationandyoucangetthemainideaeasily part1theearthisbecomingwarmer 1 pleasefindoutthereasonswhytheearthisbecomingwarmerfromthelesson humanactivity theburningoffossilfuels byproducts greenhousegases thelevelofcarbondioxide readandanswer translatethesentenceintochinese thereisnodoubtthattheearthisbecomingwarmerandthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon 毫无疑问 地球在变暖 而地球变暖正是人类活动导致而成的 并非是一种无规律的自然现象 canyousaysomethingaboutthegreenhouseeffect isitcausedbyhumanactivityorisanaturalphenomenon doweneedgreenhousegases why iftherearetoomuchgreenhousegases whatproblemscanbecaused 1 itisanaturalphenomenon 2 weneedthosegases withoutthegreenhouseeffect theearthwouldbeaboutthirty threedegreescelsiuscoolerthanitis 3 itwillcausetheglobaltemperaturetogoup 1 anaturalphenomenon 2 need without wouldbe coolerthan 3 cause togoup canyouretellnow 1 whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977 a dr janicefoster b charleskeeling c georgehambley d sophiearmstrong b 2 insomescientists view whathasresultedintheincreaseincarbondioxide theburningofmoreandmorefossilfuels canyouanswer part2doesitmatter somescientistshavedifferentopinionsonthepossibleeffectsofgreenhousegases readanddebate drjanicefoster georgehambley catastrophe can tpredict serious shouldn tworry mild positive better expressthedifferentopinions weneedn tdoanything forit llbringusmorebenefitthandamage weshoulddosomethingrightnow orit llbetoolate what why discussanddebate liming lihua nowexpressyouropinions thereisnodoubtthat manybelievethat butithink asfarasi mconcerned itis that inmyopinion inmyopinion globalwarmingisnotaproblemthatcanbeignored weshoulddosomethingtoavoidtherisksahead asstudents weshouldstartfromleadingalow carbondailylife forexample athome wecanturnofftherunningwaterwhilebrushingourteeth wecanrideabiketoschool andatschool wecanrecyclethepaper therearemanythingswecandotohelp andpleaseremember nomatterhowsmallthesethingsmaylook yourcontributioncou