地理教案教学设计《大气环境保护》沉浸式双语教案设计

《大气环境保护》沉浸式双语教案设计──高一地理上册第二章第七节广东省东莞市东华初级中学叶晓霞教学目标1.了解大气污染所形成的全球变暖、臭氧层的破坏、酸雨等现象产生原因及危害；2.正确认识大气环境保护的重要意义；3.通过沉浸式双语讲授，学生在掌握地理知识的过程中，应用英语，提高英语应用能力。教学重点1.全球变暖2.臭氧层的破坏和保护3.酸雨的危害教学难点英语语境的建立与学科学习相结合教学准备多媒体课件教学过程1．Introduction(导入新课)ShowtothestudentsthepicturethattheearthissweatinglikeamanfeelingenormouslyhotinsummerandthepictureofAntarcticholeofozonosphere，andwatchtheshortfilmaboutacidrain.(出示地球出汗的卡通片，南极臭氧空洞图片以及观看酸雨影片片段，指出全球大气环境已经受到严重的污染，所以本课要研究大气环境保护)2．presentation（教授新课）2.1.整体思路Guidethestudentstoknowthreeatmosphericproblems，eachprobleminstructedinthisway:first，whatcausestheproblem;secondly，whatharmfulaffectssuchproblembring;andfinally，measuresthatcanbetakentosolvetheproblem.(分别讲述大气环境的三大问题，每个问题的以如下方法呈现：一产生问题的原因；二是其危害，三应当采取的措施)2.2具体教材双语的讲授。2.2.1globalwarmingAfterapicturethatshowthechangeofthetemperatureoftheearthinrecentyear，Iputforwardaquestion:“Isthetemperaturegoingupordown?Thestudentsansweredandstudentsunderstandwhatis“globalwarming”.ThenthestudentsdiscussedthecauseofglobalwarminginEnglish，IlistenedtothemandhelpthemexpressthemselvesinEnglish，finallyconclusionswerereachedaboutwhatthehumanshoulddotostoptheearthfromgettinghotterinthissession，studentslistenedtoEnglishspeakingandtheyspokeEnglishindiscussionandeventheytriedtoexpresstheirideasinEnglish.2.2.2theprotectionofozonelayerAtfirstashortEnglishfilmshowhowtheCFC“eat”theO3，thenwiththemorewidelyuseoftherefrigeratorthatusedCFC，Antarcticholeofozonosphereappeared(comesthepictureofAntarcticholeofozonosphere)afterthat，Englishfilmshowharmfulaffectsaboutthedepletionofozonelayer.Inthesameway，whattodotoprotectozonelayeristhelastthingforstudentstoknow.EnglishfilmisgoodenvironmentforstudentstoimmersethemselvesinEnglish.)2.2.3acidrainputforwardquestionafterquestiontofulfilltheinstructionofthecontent，suchasa)whatisacidrain;b)howitcomesintobeing;c)wheredoesacidrainfrequentlyhappend)whyacidrainisharmfule)whattodotoreduceacidrain.(Inthissession，Iestablishquestionforstudentstothinkabout，thenbypictureandfilmIletthestudentsanalyzetheproblemthemselves，andsolvetheproblemthemselves，inwhichtheyweretrainedtoanalyzefactstofindtheanswer，atthesametime，Englishthinkingpatternisapplied.)3．exercises（课堂练习）我用英文设计了几个单项选择题和双项选择题复习巩固学生所学的教学内容，同时也通过作题，学生的英语阅读理解能力得到了锻炼。练习如下：1．ChoosetherightanswerfromA，B，CandD（thereisonlyanswerthatisright）.1)Carbondioxideisthemain_______intheatmosphere.A.gasthatcanformacidrainB.greenhousegasC.gasthatwilldamagetheozonosphereD.gasthatcanformcloudtorain2)Deforestationwillresultintheincreaseof_______.A.carbondioxideB.carbonoxideC.sulfurdioxideD.CFC3)Apartfromthenaturalfactorsthatdamagetheozonosphere，thehumanbeing’sbreak-downofozonemainlyrefersto_______.A.thereleaseofcarbonoxideB.thereleaseofcarbondioxideC.thereleaseofCFCD.thereleaseofnitrogenoxide4)Intheatmosphere，ozonosphereliesinthe______.A.troposphereB.stratosphereC.mesosphereD.hydrosphere5)TheacidraininChinaismainlysulfatedacidrainbecause_____.A.weburnwoodformainenergyB.weburncoalformainenergyC.wehavepowerstationpropelledbyfireD.ourpowerstationpropelledbywater2.choosethetworightanswersfromA，B，CandD.1)Theartificialreasonsfortheincreaseofcarbondioxideintheatmosphereare_____.A.burningoffossilfuelsB.constructionofpowerstationC.deforestationD.theseaispolluted2)Thedirectreasonsforglobalwarmingtoraisethesealevelare______.A.therewillbemoreriversB.morerainfallandlessevaporationC.oceanwaterexpandduetotheincreaseoftemperatureD.meltedpolaricemakesthesealevelrise3)Thedamageoftheozonosphereresultin_______.A.morepeoplewillhaveskincancerB.rainstormsinthewholeworldC.globaldroughtD.damageoftheecologicenvironmentandagriculture4)Thegasesthatwillformacidrainare_______.A.carbondioxideB.sulfurdioxideC.nitrogenoxideD.carbonoxide5)Theaffectsthatacidrainresultinare_______.A.acidifythesoilB.morepeoplegetskincancerC.acidifywaterintheriversandcausefishtodieD.decayinbuildingsandculturerelics4.homework(课后练习)Answerthefollowingquestionsaccordingtothetext:Part1globalwarming:6)Whatarethemainproblemsofatmosphericenvironmenttoday?______________________________________________________________________________7)Istheglobalwarmingonlyduetonaturalreasons?______________________________________________________________________________8)What’stheartificialreasonthatmakestheairtemperaturerise?______________________________________________________________________________9)Inwhatwayscanthehumanbeingsincreasecarbondioxideintheatmosphere?____________________________________________________________________________________________________________________________________________________________10)Howdoesthesealevelrise?(therearetwoways，whatarethey?)______________________________________________________________________________11)Whatwillbeaffectedwhentherainfallandhumidityconditionsaroundtheworldchange?______________________________________________________________________________12)Whatarethemeasurestoreducetheamountofreleasedcarbondioxide?____________________________________________________________________________________________________________________________________