选修六Unit4Globalwarming教学设计

1、Unit4GlobalwarmingReading(教学设计)富源一中刘胜丽教学目标知识目标：(1) 掌握阅读的方法和技巧，让学生了解地球温度上升的现象、原因及影响。(2) 掌握文中“it”在强调句中的用法。能力目标：能较好地运用泛读和精度的阅读技巧，准确地从文中找到关键信息。德育目标：(1) 通过学习，帮助学生树立“节约能源，保护环境”的主人翁意识。(2) 关爱生命，爱护环境，学会竞争和合作，建立自信心和集体荣誉感。情感目标：通过学习调动学生的学习积极性，让学生树立正确的世界观和人生价值观。教学重点：提高学生对英语学习的兴趣和积极性，较好地掌握泛读和精读的方法。教学难点：如何让学生较好地掌握

2、泛读和精读的方法，便把所学知识运用于高考中。教学方法：(1) 以学生为主体，教师为主导，泛读和精读相结合。(2) 采用讨论、协作、探究、竞争的教学模式，引导学生灵活运用所学知识。(3) 评价激励表运用于教学：即对小组在整节课中的综合表现给打分让组与组之间有个比较，从而达到激励上进的效果。如下表所示：G代表Group;根据班级情况可分成8个小组组别参考度G1G2G3G4G5G6G7G8合作度表现度(竞争度)准确度遵纪度总分TeachingproceduresStep1:GreetingsandLead-inQuestions：(1)Areyouhot?(1)Comparedtothepastfe

3、wyears,wha'ttsheweatherlikethisyear?(2)Whatcausestheglobalwarming?Humanactivityorarandombutnaturalphenomenon?(3) showsomepicturestothestudents.(设计意图：通过提问和图片展示引出本节要讨论的话题全球在变暖。)Step2：Fast-readingReadingComprehensionILetthestudentsfastreadthethepassageandthenanswerthefollowingquestions.1. What'

4、sthemaintopicofthearticle?2. Whowrotethemagazinearticle?Whatisnameofthemagazine?3. Whathascausedglobalwarming?4. Whatdoscientiststhinkmakestheeart'htsemperaturegoup?5. Howdoes“greenhouseeffect”comeabout?Answers:1. It'saboutglobalwarmitnhgewarmingoftheearth.2. TheyareDr.JaniceFoster,CharlesKe

5、elingandGeorgeHambley.3. Humanactivity.4. Theburningoffossilfuels.5. Itcomesaboutwhensmallamountsofgasesintheatmospheretrapheatfromthesunandthereforewarmtheearth.(设计意图：训练学生归纳、总结的能力)ReadingComprehensionII(pairwork)Readthearticleagain.Arethesestatementstrueorfalse(P27)?True(T)orFalse(F)questions.()1.T

6、hetemperatureinthelastcetnurydidns'eetmtoincreasemuch.()2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.()3.JaniceFosterbelievesshecanmeasurethefutureglobalriseintemperature.()4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.()5.GeorgeHambleybelievesthatglobalwa

7、rmingwilldogoodratherthanharmtotheearth.()6.Itisclearwhattheeffectsofglobalwarmingwillbe.Answers:1.T2.T3.F4.T5.T6.F(设计意图：训练学生积极参与、协作、竞争的能力)ReadingComprehensionIIIGetthestudentsreadthepassageagainandasksomestudentsanswerthefollowingquestions.1.Thepurposeofthefirstparagraphisto_.A. introducethewriterB

8、.explainachangeC.introducethetopicD.raiseaquestion2.Thegraphsareusedto.A.illustratepointsbyprovidingevidenceB. tellthechangeoftemperatureC. tellthecontentofcarbondioxideintheairD. interestthereaders3. Greenhousegasesreferto.A. carbondioxideB.theburningoffossilfuelsC.byproductsoftheburningoffossilfue

9、lsD.coal,naturalgasandoil4. Greenhouseeffect.A. isanaturalphenomenonB. happenswhenthere'stoomuchcarbondioxideC. doesgreatharmtohumanbeingsD. makeslifeforhumanbeingsbetter5. foundouttheamountofcarbondioxideintheatmospherefrom1957to1997.A.Dr.JaniceFosterB.CharlesKeelingC.GeorgeHambleyD.SophieArmst

10、rong6. WhichofthefollowingstatementsisTrue?A.Burningfossilfuelscausestheglobalwarming.B. Wewillhavemorefoodwithglobalwarming.C. Globalwarmingmeansdisasterstohumans.D. Moregreenhousegaseswillgatherintheatmosphere.Answers:15CACAB6.D设计意图：进一步训练和提升学生快速阅读，捕捉文中信息的能力。Step3：Careful-reading(Groupwork)Letthest

11、udentsreadthepassagecarefullyanddiscussthefollowingquestionsingroups,thenfillinthechartbelow.Thewholeclasswillbe8groups.ThedifferentideasbetweenDr.JaniceFoster&GeorgeHambleyDr.JaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto(1).Anincreaseoffivedegreeswouldbea(2) andcouldbe(3

12、) .Morecarbondioxideisa(4)thing,whichmakescrops(5)andwillencourage(6)Fillinthechart:G1(1)G2(2)G3(3)G3(4)G5(5)G6Comment:G7(1)(2)(3)G8(5)(6)Answers:(1)goup(2)catastrophe(3)veryserious(4) positive(5)producemore(6)agreaterrangeofanimals设计意图：训练和提升学生精读的能力，同时激发他们积极参与、协作、竞争的热情和意识。Step4:Summary(1) Getthestud

13、entsmasterthemethodoffast-readingandcareful-reading.(2) Getthestudentsdiscribethemainideaofthepassageusingtheirownwords.(3) Getthestudentslearntolivealow-carbonlife.Step5:Homework1. Prepareadebateingroups.2. SurftheInternetformoreinformationaboutglobalwarming.Step6:主要板书Unit4GlobalwarmingReadingQuestions:1. What