教学设计：Whatcanwedoathometoprotecttheenvironment？同课异构

Unit2SavingtheEarthTopic3Whatcanwedotoathometoprotecttheenvironment?SectionA教学设计Themainactivitiesare1aand1b.本课重点活动是1a和1b。Ⅰ.Teachingaimsanddemands教学目标1.Learnsomenewwords:plastic,suppose,nod,agreement,shake2.Learnausefulsentence:Everyoneissupposedtodoso.3.Learnthecompoundsentenceswith“or”,“and”,“but”and“while”:(1)Noiseisakindofpollutionandit’sharmfultoourhearing.(2)Theearthisbeautifulbutpeoplearehurtingtheearthnow.(3)Workhard,oryouwillfailtheexam.(4)ShewasbusycookingwhiletheywerewatchingTV.4.Learntotalkaboutenvironmentalprotection.Ⅱ.Teachingaids教具有关垃圾污染的多媒体图片或挂图/塑料袋、饮料瓶等实物/录音机/小黑板Ⅲ.Five-fingerTeachingPlan五指教学方案Step1Review第一步复习(时间:7分钟)师生互动，复习上个话题的内容，培养学生的听、说能力，导入本课话题。1．(复习讨论污染的危害。)T:Wetalkedabouttheharmofpollutioninlasttopic.Andweknowtherearemanykindsofpollution,suchaswaterpollution,airpollution,lightpollution,litterandsoon.Butdoyouknowhowthesekindsofpollutionaffectourenvironment?Volunteers?(教师以竞答的方式请学生回答。)Example:S1:Waterpollutionmakessomeanimalsdead.S2:Waterpollutionmakessomeplantsdead.S3:Peopleandanimalscan’tdrinkthewater.S4:Airpollutioncausesthegreenhouseeffect.S5:Airpollutionmakespeoplesickandevencausescancer.S6:Airpollutiondestroystheozonelayer.…T:Welldone!Youknow,allkindsofpollutionarepollutingourenvironment.Sowearefacingtheseriouspollutionproblems.Whatshouldwedotoimproveourenvironment?2.(学生分组讨论，然后回答。)T:Pleasediscussingroups.Thenmakeareport.Group1:Don’tspithereandthere.Don’tpicktheflowers.Plantmoretrees.…Group2:Askthegovernmenttomakerulesandpulldownsomechemicalfactories.Askpeopletosaveelectricity.…T:ourenvironment?Ss:Ofcourse.T:Me,too!OK,let’sbegreenerpeople2Presentation第二步呈现(时间:14分钟)利用图片或实物创设语言情景，呈现部分生词；并通过听录音回答问题等形式呈现1a，完成1b。1.(教师用图片或实物引出本课的词汇和内容。)T:Ifwewanttobegreenerpeople,whatshouldwedo?(教师展示图片。)T:Isheagreenerperson?Ss:No.T: (板书，让学生猜测其汉语意思，且要求掌握。)plastic(教师展示图片。)T:Isshegreen?Ss:No.T:Weshouldreducepapercups.(板书且要求学生理解。)reduce(教师展示图片或出示实物。)T:Whatarethese?Ss:Theyaresoftdrinkcans.(教师帮助学生回答并板书，要求学生理解can。)canT:Howshallwedealwiththem?Ss:Weshouldcollectthemforrecycling.(教师让学生看图片，帮助学生总结环保方面的知识。)T:Now,weknowweshouldreduce,reuseandrecyclesomethingstoprotectourenvironment.WecallthemthethreeRs.(板书并要求学生理解thethreeRs的含义。)thethreeRs—reduce,reuseandrecycleT: Itisnothardforustoprotecttheenvironment.Wecanencouragepeoplearoundustobe greenerpeople.Wouldyouliketodoso?Ss: Sure.T: Protectingourenvironmentisourduty.Thatistosay,everyoneissupposedtodothat.Itmeanseveryoneshoulddothat.(板书并要求学生掌握。)besupposedtodosth.T:Nowwhatcanwedoathometoprotecttheenvironment?Pleaselistentothetape,thenfindouttheanswer.(教师放1a录音，让学生不看书回答问题。)T:Canyoufindouttheanswer?(师生共同核对答案。)2.(让学生再听1a录音，回答小黑板上的问题，为完成1b做铺垫。)T:Pleaselistentothetapeagain,thentrytoanswerthequestionsonthesmallblackboard.(展示小黑板。)(1)Whoisworkingforanorganizationthatprotectstheenvironment?(2)What’shermainjob?(3)Shouldweusebothsidesofpaper?(4)Whyistherecyclinguseful?(师生共同核对答案。)Step3Consolidation第三步巩固(时间:10分钟)通过跟读录音、两人对话、复述课文等形式巩固1a。1.(让学生跟读1a录音并完成1b。)T:Pleasereadtheconversationafterthetape,thenfinish1b.(核对答案。)2.(学生两人一组练习对话，然后抽查几组学生，以检验活动成果。)T:Pleaseworkinpairs.ThenI’llasksomepairstoactitout.3.(让学生再读1a，并找出关键词，为下步复述做铺垫。)T:Pleasereadtheconversationagain,andtrytofindthekeywords.4.(让学生运用关键词复述1a，培养学生的语言组织能力和表达能力。)T:Now,I’llasksomestudentstoretell1a.Pleasetrytospeakwithyourownwords.Example:S1:I’mJaneandI’mstudyingatRen’aiInternationalSchool.Inmysparetime,Iamworkingforanorganizationthatprotectstheenvironment…Step4Practice第四步练习(时间:10分钟)听录音，完成2，让学生掌握科学处理生活垃圾的方法。然后导入学习并列句，完成3。1.(让学生听录音，完成2。)T: Pleaselistentothetapecarefully.You’llhearfourpeopletalkingaboutenvironmentprotection.Thenfinish2.(听两遍录音后，师生共同核对答案。)2.(教师让学生判断下列句子陈述的内容是否是改善环境的行为，引出while,but,and,or引导的并列句。)(展示小黑板。)(1)Weshoulduseplasticbagsasfewaspossible.(2)Weshouldthrowthegarbageintheriver.(3)Weshouldreducethewasteweproduce.(4)Weshouldusebothsidesofpaper.(5)Weshouldthrowtheplasticbagsratherthanreusethem.T:Lookatthefivesentences.Ifyouthinkthestatementisgoodforourenvironment,younodyourhead,anditmeansagreement,(教师做点头状并重读nod。)oryoushakeyourhead,anditmeansdisagreement.(教师做摇头状并重读shake。)(板书且要求学生掌握。)nodagreementshake(师生共同核对答案。)(教师出示小黑板上的句子。)(1)Younodyourheadanditmeansagreement.(2)Hurryup,oryou’llmissthetrain.(3)Waterisimportantbutsomepeopledon’tsaveit.(4)Somepeopleprotectanimalswhileotherskillanimals.(教师让学生讨论画线部分的单词在句中起到什么作用，前后两个句子是什么关系。)T: Let’slookatthesentences.Payattentiontothewordsunderlined.What’sthefunctionofthem?What’stherelationofthetwopartsineachsentence?(学生讨论后，教师引导学生一起分析这些句子，总结归纳并列句的用法。)并列句①表示并列关系，用and…②表转折，用but,while…③表选择，用or…3.(让学生依照3中的例句，完成3，巩固练习并列句。)T: Pleasejointhesentencesin3with“or”,“and”,“but”or“while”aftertheexample.(学生完成后，教师检查并核对答案。)Step5Project第五步综合探究活动(时间:4分钟)通过对生活垃圾的不同处理方式的引导，让学生增强环保意识。1.T:Lookattheseobjectsinthepicture.Whichcanbereused,reducedorrecycled?(教师让学生分组讨论，回答并核对答案。)2.Homework:WriteashortpassageaboutthethreeRsinyourdailylife.板书设计：Wouldyouliket