人教新课标高中英语选修六Unit4Reading教案

Unit4GlobalwarmingReadingTeachinggoalsTargetlanguagewordsandphrases:energy,light(v.),heat(v.),renewable,non-renewable,runout,compare,phenomenon,graph,fuel,trap,data,climate,catastrophe,consequence,range,per,glance,compareto,comeabout,fiercedebate,resultin,buildup,keeponAbilitygoalsEnablethestudentstotalkaboutdifferentsourcesofenergy.Enablethestudentstoreadthetext,understandwhatitisaboutandtalkaboutthecausesandeffectsofglobalwarming.Teachingimportant&difficultpointsEnablethestudentstogetabetterunderstandingofarticlesofthiskind.TeachingaidsAprojectorandablackboardTeachingproceduresStep1WarmingupT：Nowlet’slookatapictureontheslideandanswerthequestionbelow.Whatisthegreenhousemadeandusedfor?Agreenhouseismadeofglassandisusedforgrowingplants,especiallyduringcoldweather.What’sgreenhouseeffect?Step2ScanningReadthetextquicklyandfindtheanswertothequestions:1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?SophieArmstrong,EarthCare.2.Whatarethenamesofthethreescientistsmentionedinthearticle?DrJaniceFoster,CharlesKeeling,GeorgeHambley.3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Theydon'tagreewitheachother.Dr.JaniceFosterthinkstheeffectsofglobalwarmingcouldbeveryserious.GeorgeHambleythinksglobalwarmingwillbemildwithfewbadenvironmentalconsequences.CharlesKeelingbelievesitistheburningofmoreandmorefossilfuelsthatisresultinginabigincreaseincarbondioxide.ThefirstgraphshowsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Thesecondgraphshowsthecarbondioxidecontentintheatmospherefrom1957to1977.4.Whatarethetwographsabout?ThefirstgraphshowsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Thesecondgraphshowsthecarbondioxidecontentintheatmospherefrom1957to1977.5.Whatisthemaintopicofthearticle?Globalwarming/thewarmingoftheearth.Step3SkimmingReadthepassagecarefullyandjudgewhetherthestatementsaretrueorfalse.1.Thetemperaturelastcenturydidn’tincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesthatglobalwarmingiscausedbtheburningfossilfuels.4.Naturalgasisagreenhousegas.5.Carbondioxideisabyproductofburningfossilfuels.6.PeopleacceptCharlesKeeling’sdatabecausehetookaccuratemeasurements.7.Floodingcouldbeoneoftheeffectsoffutureglobalwarming.8.GeorgeHambleybelievesscientistsarejustguessingabouttheeffectsofglobalwarming.9.GeorgeHambleyisworriedabouttheeffectsofcarbondioxideonplantgrowth.10.Itisclearwhattheeffectsofglobalwarmingwillbe.Keys:True:3,5,6,7,and8False:1,2,4,9,10Step4DetailedreadingReadthetextcarefullyandtrytofindouthowmanypartswecandividethetextintoandfindoutthemainideaofeachpart.Part(Para_toPara_)MainideaPart1(Para_1_)introduceadebateovertheissueofglobalwarmingPart2(Para_2__to_4__)illustratehowglobalwarmingcomesaboutPart3(Para_5__to10___)listtwodifferentattitudesamongscientiststowardsglobalwarmingPart4(Para_11__to___)It’suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.Step5DebateGetintogroupsofsix.Decidewhichthreeinyourgrouparegoingtoagreewiththestatementandwhichthreearegoingtodisagreewiththestatement.GroupA:Weshalldosomethingaboutglobalwarming.GroupB:Weshalldonothingaboutglobalwarming.GroupAdiscusswhytheyagreewiththestatement;GroupBdiscusswhytheydisagree.GroupAandBgettogether.Telleachotherthereasonswhyagreeordisagreewiththestatement.Step6Homework1.Readthepassageagainandreviewthenewwordsandexpressions.2.Preparethedebateingroups.3.SurftheInternetformoreinformationaboutglobalwarming