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1Unit4AmazingScienceTopic3Chinaisthethirdnationthatsentapersonintospace.SectionCⅠ.Materialanalysis本课是九年级第四单元第三话题的第三课时。主活动是1a和2。1a介绍了电脑在各行各业中的作用，也提醒了学生要合理地利用电脑和网络。在这个信息爆炸的时代，学生很容易迷失方向，辨别信息的真假尤其重要。1b既可以通过提纲式结构来巩固1a的内容，也可以让学生学习在写作中运用这种方法来草拟提纲。2这个写作任务，可以让学生充分发挥想象，如果没有了电脑，生活会变成什么样子。这从另一个角度让学生感受电脑对我们生活的重大影响。为了能让学生有足够的时间来完成这个任务，建议留作家庭作业。Ⅱ.Teachingaims1.Knowledgeaims：掌握本课的重点词汇和短语，继续学习定语从句。2.Skillaims:能够通过1a的pre-reading任务来预测1a的内容。能够借助1b的提纲复述1a的内容，并把这种提纲式的结构运用到写作中。能够快速找到段落的中心句、辨别论证句。3.Emotionalaims:(optional)电脑和网络是个双刃剑，在利用它来服务于生活、学习的同时，不能沉溺于游戏游戏，并且要自觉远离不良信息的诱惑。2Ⅲ.Thekeypointsanddifficultpoints1.Keypoints:Wordsandphrases:doubt,tiny,inside,brain,cancel,connect,nodoubt,normally,forinstance,besides,properly,beusefulin,withthehelpof,forexample,keepsth/sb.doing,placeorders,thanksto,comeintobeing,insteadofdoingsth.Sentences:Thereisnodoubtthatcomputersareveryusefulintechnologyandbusiness.Forexample,tinycomputerswhichareinsidepatients’bodiescankeeptheirheartsbeatingnormally.Infactories,robotsarecontrolledbycomputersthatarelikehumanbrains.Grammar:Attributiveclause2.Difficultpoints：Inspace,computershavebeenusedtocontrolthespeedanddirectionofaspaceship.Besides,noteverythingwereadontheInternetistrueorgoodforus.Computershelpusatworkandathome,buttheymustbeusedproperly.Ⅳ.Learningstrategies通过标志词，如：forinstance,forexample,besides来找到属于举例子的句子。能够根据经验快速识别文段的中心句。能够根据pre-reading的任务来预测文章的内容。Ⅴ.Teachingaid小黑板/图片/ppt等。3Ⅵ.TeachingproceduresStage(timeperiod)InteractionpatternsTeacheractivityStudentactivityRemarks1Revision(3mins)PairworkEncouragetheSstoexchangetheirHMKwiththeirpartners,andchecktheanswersbythemselves.T:Hi,class!Nicetoseeyouagain.Inthelastperiod,Iaskedyoutomakeupfivesentences.Haveyoudonethem?T:Fine.Thenexchangeyoursentenceswithyourpartnersandchecktheanswersbyyourselves.Ifyoufinish,putupyourhand.T:Now,I’llchoosesomepairstoshowyoursentences.xxxandxxx,please.T:Anotherpair?ExchangeHMKwiththeirpartnersandchecktheanswersbythemselves.Ss:Yes.S1:TheGreatWallwhich/thatwasbuiltinancientChinaisregardedasthesymbolofChinesenation.S2:Thegirlswho/thataredancinginthegymarefromClassSix.S3:…S4:…对于学生出现的错误，老师要马上指出来，以降低后面的学生犯同样错误的机率。42Pre-reading(7mins)IndividualworkClassactivityStep1:LettheSstickthefieldsweusecomputerin.T:Asweknow,computersarenowwidelyused.Now,turntopage101.Youcanseemanyfieldsin1.Pleasetickthefieldsweusecomputersin.T:xxx,whichfieldshaveyouticked?T:Howaboutyou,xxx?T:Butdoyouknowwhattheseventhwordmeans?T:Itmeans“leisure”.Doyouknow“leisure”?T:Quiteright.Now,class,followme,“entertainment”.Step2:EncouragetheSstogiveanexampleoftheuseofthecomputersinoneofthefieldsmentionedin1.T:ThereisnodoubtthatcomputersareveryTickthefieldsweusecomputerin.S1:AllS2:Me,too.S2:Sorry,Idon’tknow.S3:休闲、娱乐。Ss:entertainmentGiveanexampleoftheuseofthecomputersinoneofthefieldsmentionedin1.老师要利用点评的机会讲解新词：doubt,cancel。5useful.SoI’dlikeyoutogiveanexampleoftheuseofthecomputersinoneofthefieldsmentionedin1.Canyou,xxx?T:Goodidea!Nextone?T:Yes.IlikeshoppingontheInternet.Thegoodsarecheap,soIoftenplaceordersinTaobao.Andsometimes,ifIdon’twantthegoods,Icancanceltheorders.T:Computershavebecomeveryimportantinmanyareasofworkandleisure.Youcanfindmoreinformationin1a.S1:Ithinkcomputersareusefulineducation.Wecanusethemtosearchforhelpfulinformation.S2:Inbusiness,wecandosomeshoppingontheInternet.S3:…S4:…3While-reading(10mins)IndividualworkLettheSsread1a,underlinethetopicsentenceofeachparagraphanddo1b.Checktheanswers.T:Now,let’sread1a.Youwilllearnaboutcomputers.Youhavetwotaskswhilereading.OneistounderlinethetopicsentenceofeachRead1a,underlinethetopicsentenceofeachparagraphanddo1b.Checktheanswersandfinish1b.不要担心没有解决新词就让学生完成任务。其实1b就是文章的大意。就是要培养学生获取信息的能力。另外要学生注意表示举例子的词语：forexample,for6paragraph;theotheristocompletethediagramin1b.Payattentiontotheexpressionsas“forexample,forinstance,besides”.Theyareusuallyusedtogiveexamples.Whenyoufinishthetwotasks,pleaseraiseyourhand.T:Now,let’scheckthetopicsentencesfirst.xxx,what’sthetopicsentenceofparagraph1?T:Yes,yougotit.Paragraph2,who?T:Verygoodjob.Now,let’schecktheanswerstothediagram.Onestudentforonepoint.xxx,canyoutrythefirstpoint?T:Uptonow,Ithinkyouhavelearnedalotabouttheuseofcomputers,haven’tyou?S1:Sincecomputerswere…andleisure.S2:SincetheInternet…too.S3:Computershaveimproved…,too.S4:controlthespeedanddirectionofaspaceship.S5:finddiseaseseasilyS6:…Ss:Yes.instance,besides等。4Post-IndividualStep1:LettheSsread1aagaintofindthenewRead1aagaintofindthenewwords对于文章末尾出现的新形7reading(20mins)workwordsandattributiveclauses.T:Now,let’sread1aagain.Youshouldcirclethenewwordsandunderlinetheattributiveclausesthistime.Whenyoufinish,putupyourhand.T:Therearefiveattributiveclausesinthispassage.Seehowmanyyouhavefound.Whowantstohaveatry?T:Marvelous!Youhavefoundfourofthem.Whereisthelastone?T:It’shere!Turntopage102.Lookatthesentence“Besides,noteverythingwereadontheInternetistrueorgoodforus”.Infact,andattributiveclauses.S1:Forexample,tinycomputerswhichareinsidepatients’bodiescankeeptheirheartsbeatingnormally.S2:Infactories,robotsarecontrolledbycomputersthatarelikehumanbrains.S3:..S