公开课book2unit3computersreading

Unit3ComputersReadingTheamazingfuturewesawinthevideocomefromthefollowingordinaryobjects:Doyouwanttoknowourfuturelife?DoyouknowwhoIam?CmachinealculatingWarmingup:DoyouknowwhoIam?AmachinenalyticalDoyouknowwhoIam?UmachineniversalDoyouknowwhoIam?iPadisonetypeofc.omputersMobilephoneDoyouknowwhoIam?DoyouknowwhoIam?L.aptopStudythetitle:“WhoamI?”Computer.Whatdoyouthinkthistextisabout?Skimming(略读)tofindtopicsentenceofeachparagraphSkimmingOvertimeIhavebeenchangedquitealot.Thesechangesonlybecamepossibleasmymemoryimproved.Sincethe1970smanynewapplicationshavebeenfoundforme.Thepassageismainlyabout:theandofcomputers.changesapplicationsPara1Para2Para3TopicsentenceScanning（找读）tofindInformationthroughkeywordsscanningAlanTuringwroteabookabouthowIcouldbemadetoworkasa“universalmachine”CharlesBabbagemadetheanalyticalmachine.Thecomputerbeganasacalculatingmachine.Theygavemeafamilyconnectedbyanetwork.Computerisadevotedfriendandhelperofthehumanrace.Computershavebeenusedinofficesandhomes.1642182219361960s1970sNowFinishthetimeline.TopicsentenceSupportingdetailscalculatingmachineanalyticalmachineuniversalmachinePC(desktop)laptopPara1:OvertimeIhavebeenchangedquitealot.CarefulReadingtypeSimplifydifficultsumsThinklogicallyandproduceananswerquicklySolveanydifficultmathematicalproblemUsedinofficesandhomesanalyticalmachineuniversalmachinecalculatingmachinePC/laptopMatchingfunctionPara2:Thesechangesonlybecamepossibleasmymemoryimproved.tubestransistorschipsnetworkWorldWideWebAsaresult,Itotallychangedmy_______.AsIhavegrownolderIhavealsogrown_______.shapesmallermemoryshapePara3:Sincethe1970smanynewapplicationshavebeenfoundforme.communicationfinancetraderobotsmobilephonesmedicaloperationsspacerocketsAnyhow,mygoalistoprovidehumanswithalifeofhighquality.Howdoescomputersprovidehumanswithalifeofhighquality?Withthehelpofcomputers,wecan….Whichofthefollowingplayedamoreimportantroleinthechangesofcomputers?A.changesinfunctionB.changesinsizeC.changesinmemoryD.changesinapplicationThesechangesonlybecamepossibleasmymemoryimproved.furtherunderstandingIdevelopedveryslowlyandIttooknearlytwohundredyearsbeforeIwasbuiltasananalyticalmachinebyCharlesBabbage.Computershavealwaysdevelopedrapidly.Thatdepends.“Iamadevotedfriendandhelperofthehumanrace”Supposeyouwereacomputerbelow.Makeaself-introductioningroupsoffour.Student1:acalculatingmachineStudent2:ananalyticalmachineStudent3:auniversalmachineStudent4:alaptopGroupworkGoodmorning,wearehappyheretogiveyouthisself-introduction.(together)Iamacalculatingmachine.Iwasborn……Icould…Idevelopedveryslowly….thisismysonanalyticalmachine.Hey,Longtimenosee.I’mgladtotellyouI’mnolongersimple-mindedandIcouldthink…and…Hi!Mynameisuniversalmachine.MyrealFatheris...Icansolve…fromthenon….Hello,Iamthemostamazingone----laptop.Thankstothenetwork,Imakealotoffriends.Ourfriendhumanraceusesusto………..Followthis:Ourlifehavebeenchangedbycomputers.Theymakeourlifemorecolorfulandconvenient.BUTDon’tforgetthatcomputersarejusttools.Neverignorethepeoplearoundyou.Don’tgetcontrolledbycomputers.Homework1.Readthewholetextforatleastthreetimesandunderlineimportantwordsandphrases.2.Summarizethedevelopmentofcomputers.3.Finishexercise1&2onP20.