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ID:29379038
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页数:20页
时间:2018-12-19
《高中英语 unit 3 computers教案(1) 新人教版必修2》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit3ComputerPartOne:TeachingDesign(第一部分:教学设计)Period1:Asamplelessonplanforreading(WHOAMI?)AimsTotalkaboutcomputerToreadaboutcomputerProceduresI.WarmingupWarmingupbytalkingaboutcomputerLookatthepicturesonpage17.Whatarethey?Whatdotheyhaveincommon?Yes,theyarecomputers.Thenwhat
2、isacomputer?Acomputerisamachinewhichstoresknowledgeinitsmemoryanddoescalculationsonthatknowledge.Thisknowledgeisstoredinsymbols;itiscalleddata.Acomputerusuallyhasamonitortoshowresults.However,somecomputerscanspeak;thesecomputerscanbeusedforvoicemail.计算机室Acomputerfrequentlyr
3、equiresabootdevice.Thebootdevicecontainsthecomputer’soperatingsystemanddata.Computerprogramscanbeinstalledontoacomputer.SomepeoplethinkthatcomputersarelessusefuliftheydonothaveaccesstotheInternet.TheythinkthisbecausetheInternetallowsthecomputerstosendandreceivedataandemaila
4、crosstheworld.曙光3000巨型计算机Acomputerisnowalmostalwaysanelectronicdevice.Itusuallycontainsmaterialswhicharetoxic;thesematerialswillbecometoxicwastewhendisposedof.Whenanewcomputerispurchasedinsomeplaces,lawsrequirethatthecostofitswastemanagementmustalsobepaidfor.Thisiscalledpro
5、ductstewardship.Insomecountriesoldcomputersarerecycled(melteddown)togetgoldandothermetals.Thisisdangerous,becausethisprocedurereleasesthetoxicwasteintothewaterandsoil.Computersbecomeobsoletequickly.Veryoftentheyaregivenawayandnewonesreplacethemwithintwoorthreeyears.Thismake
6、stheproblemworse.Computerrecyclingisthuscommon.Manyprojectstrytosendworkingcomputerstodevelopingnationssotheycanbere-usedandwillnotbecomewasteasquickly.Computerjargon计算机行话Computerjargonmeanswordstodowithcomputersandsurroundingtopics.Knowingwhatthesewordsmeancanhelpyouknowmo
7、reaboutcomputers.Somepeopleusethesewordstoimpressotherpeople(Alsoknownasbuzzwords).Examplesofjargon:Bit-Thesmallestdataunit,caneitherbea“0.”ora“1.”.Byte-unitofdata.SeealsoKilobyte,Megabyte,GigabyteandNibbleCPU–CentralProcessingUnit,AnothernameforprocessorData-Informationsto
8、redonacomputerDisk-Aplacetostoredata.Email-Electronicmail.GHz-Gigahertz.Usedofteni
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