最新高一+人教版+新课标+必修二+第三单元+Unit3+同步教案名师优秀教案.docx

最新高一+人教版+新课标+必修二+第三单元+Unit3+同步教案名师优秀教案.docx

《最新高一+人教版+新课标+必修二+第三单元+Unit3+同步教案名师优秀教案.docx》由会员分享，可在线阅读，更多相关《最新高一+人教版+新课标+必修二+第三单元+Unit3+同步教案名师优秀教案.docx（18页珍藏版）》请在冰点文库上搜索。

最新高一+人教版+新课标+必修二+第三单元+Unit3+同步教案名师优秀教案

高一人教版新课标必修二第三单元Unit3同步教案

Unit3Computer教学设计

Period1:

Warmingupandreading

TeachingAims

Totalkaboutcomputer

Toreadaboutcomputer

Procedures

I.Warmingup

Warmingupbytalkingaboutcomputer

Lookatthepicturesonpage17.Whatarethey?

Whatdotheyhaveincommon?

Yes,theyarecomputers.Thenwhatisacomputer?

Acomputerisamachinewhichstoresknowledgeinitsmemoryanddoescalculationsonthatknowledge.Thisknowledgeisstoredinsymbols;itiscalleddata.Acomputerusuallyhasamonitortoshowresults.However,somecomputerscanspeak;thesecomputerscanbeusedforvoicemail.

计算机室

Acomputerfrequentlyrequiresabootdevice.Thebootdevicecontainsthecomputer?

soperatingsystemanddata.Computerprogramscanbeinstalledontoacomputer.SomepeoplethinkthatcomputersarelessusefuliftheydonothaveaccesstotheInternet.TheythinkthisbecausetheInternetallowsthecomputerstosendandreceivedataandemailacrosstheworld.

-1-

曙光3000巨型计算机

Acomputerisnowalmostalwaysanelectronicdevice.Itusuallycontainsmaterialswhicharetoxic;thesematerialswillbecometoxicwastewhendisposedof.Whenanewcomputerispurchasedinsomeplaces,lawsrequirethatthecostofitswastemanagementmustalsobepaidfor.Thisiscalledproductstewardship.

Insomecountriesoldcomputersarerecycled（melteddown）togetgoldandothermetals.Thisisdangerous,becausethisprocedurereleasesthetoxicwasteintothewaterandsoil.

Computersbecomeobsoletequickly.Veryoftentheyaregivenawayandnewonesreplacethemwithintwoorthreeyears.Thismakestheproblemworse.Computerrecyclingisthuscommon.Manyprojectstrytosendworkingcomputerstodevelopingnationssotheycanbere-usedandwillnotbecomewasteasquickly.

-2-

Computerjargon计算机行话

Computerjargonmeanswordstodowithcomputersandsurroundingtopics.Knowingwhatthese

wordsmeancanhelpyouknowmoreaboutcomputers.Somepeopleusethesewordstoimpressotherpeople（Alsoknownasbuzzwords）.

Examplesofjargon:

Bit-Thesmallestdataunit,caneitherbea“0.”ora“1.”.

Byte-unitofdata.SeealsoKilobyte,Megabyte,GigabyteandNibble

CPU–CentralProcessingUnit,Anothernameforprocessor

Data-Informationstoredonacomputer

Disk-Aplacetostoredata.

Email-Electronicmail.

GHz-Gigahertz.Usedoftenincorrectlytodescribethespeedofaprocessor.Butwithsome2.4

GHzprocessorsfasterthan3.6GHzones,itisclearthatitisjustasalesmantrick.

Load-Getdatafromadisk

Nibble-HalfaByte

Save-Putdataonadisk

RAM–random-accessmemory（随机存取存储器）,themorethebetter.

USB-UniversalSerialBus（通用串行总线，一种简化了插接多种附件的薄型插座）

WWW-WorldWideWeb,partoftheInternet

II.Pre-reading

1.Questioningandanswering---Whatdoyouknowaboutcomputer?

?

Electronicmachinecapableofperformingcalculationsandothermanipulationsofvarioustypesofdata,underthecontrolofastoredsetofinstructions.Themachineitselfisthehardware;theinstructionsaretheprogramorsoftware.Dependinguponsize,computersarecalledmainframes,minicomputers,andmicrocomputers.Microcomputersincludedesk-topandportablepersonalcomputers.

?

Amulti-functionelectronicdevicethatcanexecuteinstructionstoperformatask.?

Adevicethatacceptsinformation,processesit,andsuppliesanoutput.Acomputerusuallycontainsmemory,acontrolunit,arithmeticandlogicalunits,andameansforinputandoutput.

-3-

?

aprogrammablehardwarecomponentthatiscontrolledbyinternallystoredprogramsandthatcanperformsubstantialcomputations（includingarithmeticandlogicoperations）withouthumanintervention.Acomputertypicallyconsistsofoneormoreprocessingunits,memoryunits,andassociatedperipheralinputandoutputdevices.

?

Relatedtoautomationandelectronicdataprocessing.TheLibraryofCongresscommonlyclassesmostcomputer-relatedbooksinHF5548,QA75-76,Z52,T385,andsomeTKranges.

?

amachineforperformingcalculationsautomatically

calculator:

anexpertatcalculation（oratoperatingcalculatingmachines）?

Acomputerisadeviceormachineformakingcalculationsorcontrollingoperationsthatareexpressibleinnumericalorlogicalterms.Computersareconstructedfromcomponentsthatperformsimplewell-definedfunctions.Thecomplexinteractionsofthesecomponentsendowcomputerswiththeabilitytoprocessinformation.Ifcorrectlyconfigured（usuallyby,programming）acomputercanbemadetorepresentsomeaspectofaproblemorpartofasystem.Ifacomputerconfiguredinthiswayisgive

2.Discussingandsharing---Howhavecomputerschangedourlives?

Somedaysoon,ifyouhaven?

talready,you?

relikelytoplugintothecomputernetworknationgrowinginourmidst.Computerterminals,orsmallcomputersconnectedviamodem（amodulator/demodulatorcircuitforencoding/decodingcomputerchatter）toordinarytelephonelines,shouldbeasubiquitousasthetelephoneitself.They?

reamuchmoreusefulandhumanetool

-4-

thanthephone,andwithcorporateAmericabehindthemthenetworkswillbe

everywhere----changingourlivesmorethananytechnologysincetheautomobile.Joiningacomputernetworkisthesameasjoiningacommunity.Smallsystemsarelikevillages,wherenewmembersareformallywelcomed.Thelargernetworks,theSourceandCompuServe,forexample,arecities-anonymous,fulloflifeandevents,butdifficulttofitinto.

III.Reading

1.ListeningandreadingtotherecordingofthetextWHOAMI?

Turntopage18andlistenandreadtotherecordingofthetext.Payattentiontothepauses,pronunciationandintonationofthenativereader.

2.Readingaloudandunderliningexpressions

Nowwearetoreadthetextonceagainandunderlinealltheexpressionsinthetext.Putthemdownintoyournotebookafterclassashomework.

CollocationsfromWHOAMI?

beginas…,acalculatingmachine,bebuiltas…,atthattime,atechnological

revolution,thestartofartificialintelligence,writeabook,bemadetowork,solve

problems,fromthenon,growanylarger,Astimewentby,gobackto…,bemadesmaller,

memorybecamesolarge,standtherebyoneself,beconnectedby…,shareknowledgewithothers

through…,beputinto…,providehumanswith…,dealwith…,trulyfilledwith…

3.Reading,identifyingandsettling

Attention,please!

Itistimetoskimthetextonemoretimeandidentifythedifficultsentences.Tryanalyzingthestructuresofthedifficultsentencesanddiscussthemamongyourgroupmembers.Youmayalsoputyourquestionstomeforhelp.

Chat（online）（在线）聊天

Tochatistotalkaboutordinarythingsthatarenotveryimportant.Youcanchattoonepersonortomanypeople.PeoplealsousethiswordnowforpartsoftheInternetwherewecantalkwithmanydifferentpeopleatthesametime.Usually,youchatontheinternetinachatroomor

-5-

messagingservicelikeAOL（AmericanOn-Line）InstantMessenger（AIM）,YahooMessenger,or

MSNMessenger.

IV.Comprehending

1.Scanthetextforinformationtocompletethetablebelow,describingthedevelopmentof

computer.

Thecomputerbeganasacalculatingmachine.In1642

TheanalyticalmachinewasmadebyCharlesBabbage.In1822

ThecomputergrewrapidlybothinsizeandIn1936

inbrainpower.

Thecomputerhadgrownaslargeasaroom.1940s

Thefirstfamilyofcomputerwasconnectedtoeachother.In1960s

Computerswereusedinofficesandhomes.In1970s

ComputersconnectpeopleallovertheworldNow

Together.

2.Readthetextagainandcompletethechartbelow.

Paragraph1Paragraph2Paragraph3

OvertimeIhaveThesechangesonlySincethe1970sTopic

beenchangedquitebecamepossiblemanynewapplicationssentence

alot.asmymemoryhavebeenfoundforme.

improved.

Calculatingmachine,tubes,communicationsSupporting

Analyticalmachine,transistors,financedetails

Universalmachine,chips,trade

PC,network,robots

laptop,worldwideweb,mobilephones

spacerockets

providingalifeof

highquality

-6-

Period2:

LearningaboutLanguageTeachingAims:

TolearntouseThePresentPerfectPassiveVoiceTodiscoverusefulwordsandexpression

Todiscoverusefulstructures

Procedures

I.Warmingupbyreadingtothetape

Tobeginwith,turntopage18,listeningtoandreadingtotherecordingofthetextWHOAMI?

Attentiongoestothepausesandintonation,aswellasthepronunciationofthereader.

II.DiscoveringusefulwordsandexpressionsInpairsdotheexercises1,2and3onpages20.Youmustfinishthemin10minutes.

III.Learningaboutgrammar

1.PassiveVoice—Overview

TenseorModelPassiveSentence

SimplePresentTheTOEFLexamisgiveneverysixmonths.

SimplepastTheTOEFLexamwasgivenlastmonth.

SimpleFutureTheTOEFLexamthisyearwillbegivenonOctober15.

PresentContinuousTheTOEFLexamisbeinggiveneveryyear.

PresentperfectTheTOEFLexamhasbeengiveneveryyearsince1950.

PastperfectTheTOEFLexamhadbeengivenbeforetheVietnamWaroccurred.

SimpleModalTheTOEFLexamshouldbegiventoeveryForeignstudent.

PastModalTheTOEFLexamshouldhavebeengiventoalltoenterUScolleges.

2.ThePresentPerfectPassiveVoice

ThestructureofThePresentPerfectPassiveVoiceis:

have/has，been，~ed

-7-

IV.Readingaloudanddiscovering

Nowgobacktopage18toreadaloudanddiscoverinthetextexamplesofThePresentPerfect

PassiveVoice.

…asalaptop,Ihavebeenusedinofficesandhomessincethe1970s.

Sincethe1970smanynewapplicationshavebee