8A Chapter 4教案.docx

Chapter4ComputertechnologyTheIstperiodTeachingAims:1.Learnaboutcomputer2 .Trainthestudents5readingability.3 .Mastersomenewwordsaboutcomputer4 .Learnhowtofindthemeanings.TeachingImportantPoint:!.Improvethestudents'readingability.5 .Enablethestudentsunderstandthetextbetter.6 .Developthestudents,creative,comprehensiveandconsolidatingabilities.TeachingDifHcultPoint:1 .Howtoimprovethestudents,readingability.2 .HowmuchdoyouknowaboutcomputertechnologyTeachingMethods:Individual,pairorgroupworktomakeeverystudentworkinclass.TeachingAids:ThemultimediaandtheblackboardTeachingProceduresStepl:warmingupT:asksomestudentstoanswer,whatisthis?Whichkindofelectricmachinedoesteacheruseteachusintheclass?S: Computer.T: whatdoyouknowaboutcomputer?Beforeyoureadaboutcomputers,lookatthepicturesbelowandtrytowritethenamestocompletethesentences.mainunitmonitorspeakermicro-phonekeyboardmousefloppy diskCD-ROMdriveDVD-ROMdrive1.OOKandTHINK1. Theshowswordsandpictures.2. Weusethefortypingininformation.3. Thestoresinformation.4. Thehelpsuscontrolthecomputer.5. Wecanhearsoundfromthe6. WeputtheorintotheStep2:pre-reading1.et'slearnsometechnicalwordsassociatedwithcomputers:Pc:personalcomputer1.aptop:small,portablepersonalcomputerVirus:somethingwhichgetsintoaprogramanddamagesitData:informationFile:acollectionofdatastoredtogetherNetwork:asystemthatlinkstwoormorecomputerstogetherSoftware:programsHardware:themonitor,keyboard,drives,etc.Command:anordertothecomputere-mail:electronicmailmodem:adevicewhichlinksthecomputertothetelephonesystemmultimedia:acombinationofsound,movingpicturesandtextstep3:while-reading1. lookatthetitleofthepassageandthepicturesonthenextpage.Thendiscussthefollowingstatementswithapartnerandcorrectmistakes.Computers.1. areinsidemanymachinesinourhomes.2. candounimportantjobslikeflyingplanes.3. arealreadyclevererthanpeople.2. readingpassage(computers)Thesearethreeshorttextstypicalofinformationleafletsornewspaperormagazinearticles,discussingdifferentaspectsofcomputersinthemodernworld.Allright!Turntopage46.Lookatthepassageandthinkaboutsomequestions:1. WhatdoesTonyplantodoaboutcomputers?2. Whatareprobablythebestcalculatorsintheworldatthemoment?3. IsacomputerclevererthanIam?4. HowdoWegiveacomputerinstuctions?5. WhatdoesaCD-ROMcontain?3.fast-readinganswersomequestionsaboutpassage.1. Hiddenhelpers:Theuseofcomputershasspreadveryquickly.Therearesmallcomputersinsideeverydayappliancesinyourhome.2. Whatkindofjobscanacomputerdo?Computersareelectronicbrains.Theycanperformmanyfunctions,calculateandevencontrolrailwaysystems3. IsacomputerclevererthanIam?Atpresent,thehumanbrainissuperiortothecomputer,asithasgreaterunderstanding,butthismaychange.Ifcomputerscandosomeofourjobsbetterthanwecan,howwillourliveschange?:Whatisthemainideaofthethreeshortpassage?Hiddenhelpers:theuseofcomputershasspreadveryquickly.therearesmallcomputersinsideeverydayappliancesinyourhome.Whatkindofjobscanacomputerdo?Computersareelectronicbrains.theycanperformmanyfunctions,calculateandevencontrolrailwaysystems.IsacomputerclevererthanIam?Atpresent,thehumanbrainissuperiortothecomputer,asithasgreaterabilitytounderstand,butthismaychange.ifcomputerslearntodosomeofourjobsbetterthanwecan,howwillourliveschange?4. FindthemeaningsFindthesewordsandexpressionsinthepassage.Thenreadthewordsroundthemandchoosethebestmeanings.1. hardlyevera.sometimesb.seldomc.often2. dependona.needb.trustc.playwith3. realizea.allowb.understandc.decide4. tinya.allow.B.understandc.decide5. essentiala.verydangerousb.verysafec.verynecessary6. raisea.liftupb.putdownc.bringtoourattention7. forthetimebeinga.inthepastb.atpresentc.inthefuture5.ReadandthinkPeopleoftenexpectyoutogiveexamplestoexplainsomething.Readthestatementsbelowandonpage47andgiveexamples.Putonewordineachblank.1.SI:Computerscandosomeimportantjobs.S2:Forexample?S1:,and.2.S1:Theremaybetinycomputersinyourhome.S2:Where,forexample?51: Insideyour,or3. Sl:Ahumanbraincandosomethingsbetterthanacomputer.52: Forexample?51: .4. SI:Infuture,computersmaydosomejobsbetterthanpeople.52: Whatjob,forexample?SI:Ajob6.ilndthefactsTonymadesomenotesaboutthearticlesonthepage45,butsomeofthefactsinthemarewrong.readthearticlesagainandcorrecthisnoteswherenecessary.1. hiddenhelpersa. therearemanybig,hiddencomputersineveryone,shome.b. Peoplearelessdependentoncomputersthantheyrealize.2. whatkindofjobscanacomputerdo?a. computerssometimesgivewronganswersatcalculating.b. Computerscanteachpeoplemanythingsandalsoplaygameswiththem.3. isacomputerclevererthanIam?a. computerscannotcreatenewideasforthetimebeing.b. computersarebetteratdoingtheirjobsthandoctors,judgesandteachersatpresent.Step4:after-reading(discussion)Whatdoyoulearnfromthepassage?The2ndperiod1. TeachingAims:2. 1.earnaboutcomputer3. Trainthestudents,readingability.4. Mastersomenew