【课件】人教新课标必修二unit3computers

课时分配课时板块Period1WarmingupandReadingIPeriod2ReadingPeriod4ReadingIIPeriod5GrammarPeriod6ExercisesWarmingup•ThedevelopmentofcomputerP17Lookatthepictures.Talkabouteachofthem.Discusswhattheyhaveincommon.•AnabacusisanoldcalculatingmachineusedinChinauntilnow.•Ahugecomputerisbuilttosolvesomemathematicalproblems.Butitistoobig.•Acalculatorisanewcalculatingmachinewhichcansolvealargenumberofmathematicalproblems.•APCisapersonalcomputerwhichcansolveallkindsofproblemsandiswidelyusednow.•Anotebookcomputerisakindofusefulcomputerwhichcanbetakenconvenientlylikeanotebook.Youareaskedtousethefollowingexpressioninyourdiscussion.–Ithinkthat…–Inmyopinion…–Ibelievethat…–Whydoyouthinkso?–What’syourreason?Ithinktheyallcancalculatesomething.Itcandealwithsomemathsproblem.Ibelievethattheyareourgoodfriends.Inoureverydaylife.wecannotfinishourworkquicklywithoutthem.Inmyopinion,peopleimproveabacus,makeitmoreusefulandmakeitacomputer.Theyarebeingusedwidelyandconvenientlyintheworld.Softdisc(floppydisc)CD-ROMmp3SomeInformationaboutthecomputersandtheinternetHardwareSoftwareHostOutputProgramsMemoryDrivesDesk-topcomputerBusinesscomputerDigitalmovie硬件软件主机输出程序内存储器驱动器台式计算机商务计算机数字影像Chatrooms,netbar,chatbarOn-linefriendsBeon-line,ontheinternetDown-loadfilesSendandreceivee-mailWebfansInternetsitesE-mailboxElectronicmailLocalAreaNetworkLoginLogoutnetizen网吧网友上网，在线下载文件收发邮件网迷网址电子邮件电子邮件箱局域网登陆注销网民FloppydiscchipsmonitormodemCD-ROMscannerKey-boardprinterUsingwordsandexpressionsFillintheblankswiththeproperwordsintheboxCompletethesentenceswithsomeofthewordsinthebox.Monitor,mouse,keyboard,harddisc,floppydisc,CD-ROM,printer,modem,1A_________isusedtoseeyourdataonacomputer.2A__________ordiskisthemaindevicethatacomputerusestostoreinformation.3A_________isamachineforprintingtextorpicturesontopaper,especiallyoneconnectedtothecomputer.4A_________isusedtoputdataintoacomputer.5A_________isoftenusedtoconnectcomputerstoeachotherthoughphonelines.6Datacanalsobestoredina______________,whichissmallandcanbecarriedeasily.7A___________isadiscthatcontainscomputerdata.Itcanstorealargeamountofdata.monitorharddiskprinterkeyboardmodemfloppydiscCD-ROMCompactDiskReadonlyMemoryDiscussion•Whatcancomputerbeusedfor?•Ithinkthat…•Inmyopinion…•Ibelievethat…•What’syourreason?•Whydoyouthinkso?IusethecomputerorInternetto:•typemyhomework•drawpictures•playgames•communicatewithmyfriends.•gatherrelatedinformationformylessons•buythethingsIlike,egbooksandclothes.•listentomusic•watchmovies.Pre-reading1.Whatdoyouknowaboutcomputer?Forexample,canyounamesomepartsofcomputer?2.Howhavecomputerschangedourlives?mousekeyboardmonitorListentothetapeandanswerthequestions.1.WhoamI?2.Whowasthefirstpersontomaketheearliestcomputer?A.AlanTuringB.CharlesBabbageC.CharlesTuring3.Whenwasthe“universalmachine”built?A.In1822B.In1642C.1936computer(B)(c)ReadthetextagainandfindoutChangesofthecomputer:CalculatingmachineAnalyticalmachineUniversalmachineArtificialintelligencenetwork(In1642)(In1822)(in1936)(Inthe1960s)internet(Inthe1970s)1.Wherewereyouin1642?3Whatwereyoucalledin1936?4Whatdidyougetinthe1960s?Whathappenedtoyouinthe1970s?2Whathappenedtoyouin1822?1Wherewereyouin1642?2Whathappenedtoyouin1822?3Whatwereyoucalledin1936?4Whatdidyougetinthe1960s?5Whathappenedtoyouinthe1970s?InFranceIwasbuiltasanAnalyticalMachinebyCharlesBabbage.Universalmachine.Igotmynewtransistors.Iwasbroughtintopeople’shomes.Comprehending1Whoisthespeakerinthisstory?2Writedownthreesentencesfromthestorytosupportyouridea.Acomputer.1Thenin1822IwasbuiltasanAnalyticalmachinebyCharlesBabbage.2MyrealfatherwasAlanTuring,…3However,peoplethoughtIwassimple-mindeduntiltheydiscoveredIhad“artificalintelligence.”Lookatthetimelinebelow.Fillintheblankswithin-formationfromthereadingabove.Timeline1642:_____________________________________:TheAnalyticalMachinewasmadebyCharlesBabbage1936:_______________________________________________________________________1960s:________________________________________:Thefirstfamilyofcomputerswasconnectedtoeachother1970s:_________________________________________Now:__________________________________________Thecomputerbeganasacalculatingmachine1822AlanTuringwroteabooktodescribehow1960scomputerscouldbemadetoworkComputershadnewtransistorsandbecamesmallerComputerswerebroughtintopeople’shomes.ComputersconnectpeopleallovertheworldtogetherAccordingtothetimelineandtheoutlinetofinishthesummaryaboutthetextThecomputer…….asacalculatingmachinein1642,thenin1822,itwas…asanAnalyticalMachineby….Attheyearof1936,AlanTuring……todescribehowcomputers…….towork,andbuilda“universalmachine“tosolve………….Withthedevelopmentof…….,inthe1960s,computershadnewtransistorsandbecame……,thenwereconnectedtoeachotherbytheinternet.Astheyearshad……,computerswere…….peoples’homes.Nowcomputershavebecomethemostimportant…to…….allovertheworldtogether.ThesummaryaboutthetextThecomputerbeganonlyasacalculatingmachinein1642,thenin1822,itwasbuiltasanAnalyticalMachinebyCharlesBabbage.Attheyearof1936,AlanTuringwroteabooktodescribehowcomputerscouldbemadetowork,andbuilda“universalmachine“tosolvemath