仁爱版英语九年级Unit2Topic2SectionB教案

1Unit2SavingtheEarthTopic2AlltheseproblemsareveryseriousSectionB一．教材分析本节课选自仁爱版英语九年级上册Unit2Topic2AlltheseproblemsareveryseriousSectionB.本课以讲树木的作用以及砍树的危害----形成沙尘暴的原因，以关于环境保护为中心话题。通过描述贴近生活的事件，向学生展示环境破坏的危害。本人结合教学实际在教材上作了适当的调整，使教学内容符合学生实际认知水平，借助于沙尘暴的视频和相关的图片，导入本课话题，让学生了解沙尘暴形成的原因，人们砍树的危害并进行语言知识的操练与巩固，接着引入树木的功能，过度到保护森林和水资源的重要性，以培养学生的环保意识。一．教学思路本课以热点话题环境保护为中心话题，通过有效地教学手段，激发和培养学生学习英语的兴趣，养成良好的学习习惯并形成有效地学习策略，发展自主学习的能力和合作精神，始终贯彻“用中学，学中用”学用结合，学以致用的原则，教学方法多样，根据教材和教学的需要采用了直观法，任务型教学法，活动教学法和交际法，同时教师指导学生学会导学自悟的学习方法。教学过程中始终贯彻以学生为主体，教师为主导，训练为主线，能力为目标的教学理念，做到课堂教学活动化，教学任务活动化，活动任务具体化，让学生在教师的指导下，通过感知，体验，实践，参与和合作等方式，实现一个个任务的目标，，感受成功。在学习过程中进行情感和策略的调整，以形成积极的学习态度，促进语言实际运用能力的提高。一．教学目标(一)知识目标21.1.Learnsomenewwordsandphrases:sand,cutdown,changeinto,prevent,prevent…from,humanbeing,although,law,turnoff2.Learnsomeusefulsentences:(1)Icouldn’tseeanything.(2)Asaresult,alotofrichlandhaschangedintodesert.(3)Treescanstopthewindfromblowingtheearthaway./Theycanalsopreventthewaterfromwashingtheearthaway.(4)Alotofwatercanbesavedbyforests(5)Cuttingdowntreesisharmfultohumanbeings,animalsandplants.(6)Passlawsagainstwaterpollution.(7)Remembertoturnthetapoffwhenyouleave.3.Continuetolearntheindefinitepronounandadverb.4.Learntotalkaboutpollutionanditsharm.(二)技能目标1.学生通过语言知识的呈现及输入和感知的同时进行不同形式的操练，从而达到语言知识的熟练运用。2.通过视频、图片直观教学，学生能用英语介绍树木的功能及如何保护森林和水资源的重要性（三）情感态度和价值观目标1.通过情境视频、图片直观教学，激发学生的环保意识。2.通过小组活动，培养学生形成互学互助的合作意识，竞争意识及团结协作精神二．教学重难点重点：1.ThefuntionofTrees2.Someimportatphasesandsentences3(1)Icouldn’tseeanything.(2)Asaresult,alotofrichlandhaschangedintodesert.(3)Treescanstopthewindfromblowingtheearthaway./Theycanstopthewindfromwashingtheearthaway.(4)Alotofwatercanbesavedbyforests(5)Cuttingdowntreesisharmfultohumanbeings,animalsandplants.(6)Passlawsagainstwaterpollution.(7)Remembertoturnthetapoffwhenyouleave.难点：让学生学会用英语表达有关“如何保护环境和节约水资源”的小短文三．教学流程Step1Review1.Showdifferentpicturesaboutpollutionwithmultimedia.Askandanswerinpairs,talkingaboutdifferentkindsofpollutionandhowtoprotecttheenvironment.2．PlayashortvideoaboutsandstormsinBeijing.Leadtothetopicofthissection.Step2Presentation1.Talkaboutthesandstorms.Thenleadto1c.2.Workingroups.LetSsdo1candtalkabouthowsandstormscomeintobeing.3.Sumup:Cuttingdowntoomanytreescancausesandstorms.Buthowcanthataffecttheweather?Leadto1a.4.Listentothetapeandfindouttheanswertothefollowingquestion.Q:(1)Whataretheytalkingabout?4(2)Whatcausesthesesandstorms？（3）Whataretrees’functions？Step3Consolidation1.LetSsread1acarefully,findandtalkaboutthelanguagepointsandusefulexpressions.HelpSsunderstandthem.2.Retelltheconversationwiththekeywordsandphrases.Step4Practice1.Showapictureandavedioaboutwater2.LeadtoPart2.HelpSsunderstandtheimportantceofsavingwater3.Discussingroups:Whatkindsofwaysdowehavetosavewaterbesidesthewaysin2.Thenasksomestudentstoreporttheirresults.Finish2.（Iftimepermits.）Step5ProjectWriteashortpassagewiththetitle“ProtectingandSavingWater”.