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新课标人教版选修六教案Unit4Globalwarming.docx

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新课标人教版选修六教案Unit4Globalwarming.docxUnit4GlobalwarmingPeriod1WarmingUp,Pre—reading,prehendingAims1•・教学过程Step1Warmingup1•Warmingupbyreadingandtalking:,whatarethesourcesoftheseenergyandwhetherthesourcesarerenewableornon—renewable・Suggestedanswer:Thesixphotosare:windmills;acoalpowerstation;anoilrefinery;anuclearpowerplant;solarpanels;ahydro-electricdam・Warmingupbydiscussion:Drawaformontheblackboardasfollows:ThingsthatuseenergySourcesofenergyRenewable/non—:Theglasstrapstheheatfromthesun,"greenhousegases":Greenhousegasesperformthesamefunctionastheglassinaglasshouse:.)prehending1•FastreadingAskstudentstoreadthepassagequicklysoastogetthekeywordsandgeneralideaofeachparagraphandanswerthefollowingquestions:Whatisthemaintopicofthearticle?Whowrotethemagazinearticle?Whatisthenameofthemagazine?Whatarethenamesofthethreescientistsmentionedinthearticle?Dotheyagreewithoneanother?Suggestedanswers:(l)Globalwarming/thewarmingoftheearth.(2)SophieArmstrong,,CharlesKeeling,'(1)Readthepassagecarefullyandjudgewhetherthestatementsaretrue(T)orfalse(F).©JaniceFosterbelievesthatglobalwarmingiscausedbytheburningfossilfuels.()©Naturalgasisagreenhousegas.()③Carbondioxideisabyproductofburningfossilfuels.()©eptCharlesKeeling'uratemeasurements.( )©Floodingcouldbeoneoftheeffectsoffutureglobalwanning.()©eHambleybelievesscientistsarejustguessingabouttheeffectsofglobalwarming/)eHambleyisworriedabouttheeffectsofcarbondioxideonp

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