7/7Unit4Usinglanguage公開課教學(xué)設(shè)計(jì)（一）Whatcanwedoaboutglobalwarming?浙江省衢州第二中學(xué)林妮Ⅰ.TheanalysisoftheteachingmaterialsThisisthesecondreadingofthisunit,anditisreadingforlanguageuse.Thepassageincludestwolettersaboutglobalwarming.thefirstletterraisesthequestionsandthesecondlettergivessuggestions.Itisanpracticalwritingtextandhasaclearstructure.Thiskindofpassageisusuallynotdifficultforstudentstounderstand.Soitisagoodpassageforstudentstoreadforpracticaluse.Besides,accordingtothenewuniversityentranceexaminationmodel,practicalwritingtextisaproperchoiceforwriting.Ⅱ.TheanalysisofstudentsThestudentshaveacertainabilityofreadingandspeaking.Buttheydon’thavemuchinformationonwhatwecandoaboutglobalwarmingandhowtosummarizetheinformation.Sothislessonwillfocusonimprovingthestudents’abilityofgatheringinformationandhelpingthemlearntomakeaposterafterreading.Ⅲ.Objectives1.Studentswillbeabletolearnsomenewwordsandexpressions(commitment;individual;makeadifference;putupwith;yourcontributioncounts).2.Studentswillbeabletofigureoutthemajorpointsandsupportingdetailsofthispassage;3.Studentswillbeabletoknowdifferentopinionsonglobalwarmingandsummarizethesuggestionsonhowtodealwiththeglobalwarming;4.Studentswillbeabletoreorganizethemajorpointsandmakeaposteronhowtodealwithglobalwarmingwiththeirownwords.Ⅳ.Importantpoints&difficultpoints1.ImportantpointsStudentscanfigureoutthemajorpointsandsupportingdetailsofthispassage;Studentscanlearntosummarizethesuggestionsonhowtodealwiththeglobalwarming;2.DifficultpointsStudentscanreorganizethemajorpointsandwriteaposterwiththeirownwords.Ⅴ.TeachingprocedureStep1Lead-inBeginningquestions:(AboutPPT1)T:Whatdoyouseeinthepicture?Andwhathappenedtothem?(Possibleanswers:Theiceismelting.Polarbearsandpenguinslosttheirhomes.)Furtherquestions:(AboutPPT2)T:Why?Howdotheyhappen?(Answers:becauseofglobalwarming.)Conclusion:(AboutPPT2)T:Whatisglobalwarming?HumanactivitiessuchasburningfossilfuelscausetheincreaseofCO2,themostimportantgreenhousegas,whichleadstotheriseoftheearth'stemperature..T:Whatcanwedoaboutglobalwarming?ThereisastudentcalledOuyangGuang,whowantedtodoaprojectaboutglobalwarming,buthedidn’tknowwheretostarttostartwithhisproject?(Purpose:Useimpressivepicturestointroducethetopicofthispassageandalsogivestudentssomeknowledgeofglobalwarming.)Step2Reading1.Readingforthefirstletter.T:Readthefirstlettercarefullyandtrytofindoutwhatpuzzledthestudent?(Possibleanswers:Sometimeshefeelsthatindividualscanhavelittleeffectonglobalwarmingproblem.But,Hestillthinkspeopleshouldadvocateimprovementsinthewaytheyuseenergytoday.)(Purpose:helpstudentslearntogetthemajorpointsofthefirstletterandfindoutthepurposeofthestudent’swritingthisletter.)2.Readingforthesecondletter:T:Inordertogethelp,thestudentwrotealettertotheEarthCare.Pleasereadthefirstparagraphofthesecondlettertofindoutwhat'sthewriter'sattitudetowardsthepuzzleofthestudent?(Possibleanswers:1.Together,individualscanmakeadifference.2.Wedonothavetoputupwithpollution.)(Purpose:Trytofigureouttheauthor’sattitude,andthepurposeofwritingtheletter.)T:Soweneedtoreduce,reuse,recycleandsomeothers.(Theteacherwritesdownthesewordsontheblackboard.)Canyougroupthesuggestionsaccordingtothem?T:Theteachergivesaconclusion:Carrythemout.Theminimumeffortisalsoakindofsupport.(Purpose:Helpstudentstogainsuggestionsonhowtodealwithglobalwarmingfromthepassage.Theteacherandstudentssummarizeandgroupthesuggestions,whichgivesthestudentsachancetocheckandimprovetheirownanswers.Thishelpsstudentslearnhowtosummarizeamainpointinthetext.)T:Whatelsecanwedoaboutglobalwarming?(Possibleanswers:1.Usenewenergy;2.Askforhelpfromthegovernment......)(Purpose:Improvestudents’abilityofraisingsuggestionsonacertaintopic.)T:1.Hereisanotherway!Haveyouheardof“thelow-carbonlifestyle”?(Possibleanswers:1.Rideabikeinsteadofusingmotorvehicles.2.Collectandclassifytherubbish......)2.Let’swatchthevideoandtrytofindwhatwecandotolivealow-carbonlife?(Answers:1.Reducetheemissionofco2.Putvegetablesandfruitsonthebalcony(陽臺(tái)),asawaytocutemissions(排放)."2.Reusethematerial.Thereisa“GreenHotel,”transformedfromanoldpostoffice,thehotel'smaterialallcamefromitsformerbuilding.3.Usethenewenergy.ThecityofBaoding,inHebeiProvince,isnowturningintoasolarcity.(Purpose:Improvestudents’abilityofraisingsuggestionsonacertaintopic.Andextendthereadingtothelatestmaterialssoastohelpstudentstolearnmoreaboutwhatwecandoaboutglobalwarming,andenrichthestudents’knowledgeofthetopictobetterunderstandthetext.)T:Theteachergivescomments:tolivealow-carbonlifeandtochangetheglobalwarming,wearestillontheway.3.DiscussingandwritingT:Let’sreviewwhatwehavelearned,Ingroupsmakeaposterforyourschoolthattellsstudentsvariouswaystheycanreducetheamountofcarbondioxideintheair.Requirements:1.Useimperativesentences(祈使句)inyourposter.2.Giveyourposteralargeheading.3.MakeasloganattheendliketheoneattheendoftheletterfromEarthCare.4.Drawanadvertisingpictureaboutglobalwarming.(Purpose:Helpstudentstoformtheirownideasaboutglobalwarming,andpracticetheircreativethinkingabilitytosummarizewhattheyhavelearnedcompletely.)T:Hereisapostermadebymyselfasanexampleforyou.Theheadingcomesfromtheresultofglobalwarming,theslogancomesfromourtextbookandtheadvertisingpictureisshowingusthecauseofglobalwarming,whichcangiveyouareferencetomakingaposter.T:Pleaseshareyourposterwithyourclassmates,andexplainyourdesign.(Purpose:Trainstudentstowritetheimperativesentencestoimprovetheirwritingabilityandpracticetheabilityofusinglanguages.)T:RememberYourcontributioncounts!(Theteacherwritesdownthesewordsontheblackboard.)4.Homework1.Surftheinternettofindmoreabouthowtodealwiththeglobalwarmingandaddtoyourposter.2.Writealettertoyourfriendtointroduceyourpostertothemandaskthemtoprotecttheearthtogether.(Thelettersampleisgiventostudentafterclass)(Purpose:letstudentsgoonstudyafterclass,andpracticetheirwritingabilitybyfinishingthesampleletter,whichincludesmanyexpressionsfromthepassage.What’smore,polishthethemeofthepassage,byaskingfriendstoprotecttheearthtogether.)HomeworkDear________,ThesedaysIjustfeltveryfrustrated,forIcannotputupwithpollution.SometimesIfeltthatindividualscanhavelittleeffectonsuchhugeenvironmentalproblems.However,Istillthoughtpeopleshouldadvocateimprovemen