2019新人教高中英語選擇性必修三Unit3EnvironmentalProtectionReadingandThinking公開課教案Teachingaims:1.Enablestudentstofigureoutthemainstructureoftheexpositoryessaybyclassifyingandorganisingthekeyinformation.2.Guidestudentstolearnaboutthecausesandtheconsequencesofclimatechange.3.Helpstudentstotalkaboutwhoshouldtakeresponsibilityfordealingwithclimatechange.4.Knowthemeasurestochangeit.Teachingkeypoints:Helpstudentstofigureoutthemainstructureoftheexpositoryessaybyclassifyingandorganisingthekeyinformation.Helpstudentstolearnaboutthecausesandtheconsequencesofclimatechange.Teachingdifficultpoints:Identifywhoshouldtakeresponsibilityfordealingwithclimatechange.Knowthemeasurestodealingwithclimatechange.Teachingprocedures:StepⅠDiscussthepictureViewthepictureofpolarbearandanswerthequestionbelow.Whathappenedtothepolarbear?Suggestedanswers:Thepolarbearisdead.StepⅡWhile-readingActivity1PredictwhatwillbetalkedaboutinthepassageBeforeyourreading,listdetailsinthefirsttwocolumns.Fillinthelastcolumnafterreading.ClimatechangeWhatIKnow(K)WhatIWanttoKnow(W)WhatIHaveLearnt(L)Lookatthetitle“ClimateChangeRequirestheWorld’sAttention”andthetwopicturesonPage26,answerthefollowingquestions.1.Wherewouldyoumostlikelyfindthistext?2.Whatinformationcanyougetfromthetitle?3.Whatdoyouthinkwillbetalkedabout?Suggestedanswers:Activity1ClimatechangeWhatIKnow(K)WhatIWanttoKnow(W)WhatIHaveLearnt(L)ClimatechangerequiresmoreattentionIwanttoknowmoreconsequencesofclimatechangePolarbearGlobalwarming1.Inanewspaper.2.Climatechangerequiresmoreattention.3.Thetextwilltalkabouttheclimatechangeandenvironmentalproblems.Activity2ReadingforthestructureSkimthetextandfindthemainideaofeachparagraph.Paragraph1&Paragraph2A.TheevidenceofdramaticclimatechangethathadanimpactonEarth’secologyParagraph3B.Theconsequencesoftheriseintemperature.Paragraph4C.Thesolutionstoreducinggreenhousegasemissions.Paragraph5D.Thecauseoftheincreaseintheglobalaveragesurfacetemperature.Suggestedanswers:Paragraph1&Paragraph2:AParagraph3:DParagraph4:BParagraph5:CActivity3Focusonthe“evidence”ReadParagraph1&Paragraph2andanswerthequestion.Who:globalsurfacetemperature1.What:happenedtotheglobalsurfacetemperature?ReadtheParagraph1&Paragraph2againandanswerthequestions.Who:polarbear2.What:happenedtothepolarbear?3.Why:didthewriterwriteaboutit?Suggestedanswers:1.ThereislittledoubtthatEarthisgettingwarmerandwarmer.2.Thebearappearedtohavestarvedanddied.3.Theanswersvary.Activity4Focusonthe“causes”ReadParagraph3andanswerthequestionswithmindmaps.1.Whyisthenaturalgreenhouseeffectimportantandnecessary?2.Whataretheconsequencesofhighgreenhousegasemissions?Suggestedanswers:(1)keepingEarthclimatewarmandhabitable(2)man-madegreenhouse(3)causingEarth’ssurfacetemperaturetorisequicklyiftoomuchheatenergyistrappedActivity5Focusonthe“consequences”ReadParagraph4carefullyandfillinthemindmaps.Theriseintemperature:weather/natural

extreme,heat

serious,costing,economic

Suggestedanswers:rainstormsweather/naturaldisastersextremerainstorms,heatwavesseriousdamage,costinghumanlives,economiclosses

Activity6Focusonthe“measures”ReadParagraph5carefullyandfindoutthemeasures.measuresGovernments:Suggestedanswers:Governmentsneedtoconsidermakingpoliciesandtakingappropriateactionsandmeasurestoreducegasemissions.Weasindividualscanalsoreduceour“carbonfootprint”byrestrictingtheamountofcarbondioxide.Activity7Focusonthe“expository”Paragraph1&Paragraph2:Paragraph3:Paragraph4:Paragraph5:Suggestedanswers:Paragraph1&Paragraph2:evidenceParagraph3:causesParagraph4:consequencesParagraph5:measuresStepⅢPost-reading—CriticalThinkingDiscussthesequestionsingroups.1.Doyouthinkclimatechangeistheresultofhumanactivity?Giveyourreasons.2.Whodoyouthinkshouldtakeresponsibilityfordealingwithclimatechange?3.Whatcanwedo?Suggestedanswers:1.Theanswersvary.2.People.3.Theanswersvary.StepⅣHomewo