Unit_3_Computers_教学设计_教案.doc

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1、教学准备1.  教学目标1.Topractiselisteningcomprehension.2.Topractisemakingdecisionsandreasoning2.  教学重点/难点1.Topractiselisteningcomprehension.2.Topractisemakingdecisionsandreasoning3.  教学用具课件4.  标签Unit3Computers  教学过程Step1.revision1.checkthehomeworkexercises.1).Ithasbeenreportedthatchildrenwillbe

2、offeredfreeeducation．Ithasbeenreportedthatfreeeducationwillbeofferedtochildren．2).Ithasbeensaidthatwewillbeofferedthelatestcomputersciencecoursebook．Ithasbeenplannedthatthelatestcomputersciencecoursebookwillbeofferedtous．3).IhavebeentoldbyPeterthatIwillbelenthisnotebookcomputerforaweek．

3、IhavebeentoldbyPeterthathisnotebookcomputerwillbelenttomeforaweek．2.Question:Whatcancomputersbeusedas? Step2.Lead-inAsweknow,scienceandtechnologyisdevelopingveryfastandcomputershavebecomesmallerandsmaller.Theyhavebeenusedinmanyfields.So,the21stcenturyisthecenturyofinformationtechnologyW

4、hatdoesitmean?Doesinformationtechnology/ITonlymeanthingslikecomputers?Ofcausenot.Actually,itmeansmorethancomputers.ComputersarejustonekindofIT.WhatelsedoyouknowispartofIT?(TV,radio,CD-ROM,DVD,books……) Step3.Listening(SB) 1.Pre-listening:WhatarethechangesbroughtbydifferentformsofIT? What

5、aretheadvantagesanddisadvantagesofthem? 2.While-listening:Gothroughthechartandmakesurethestudentslookatthechartbeforetheylistentothetape.(Thisistosharpentheirattentionandlistenfortheanswers.Thiswillalsohelpthemgetthegistofthetext.)ThenListentothetapeandfinishfillinginthechart.(Ifnecessa

6、ry,playthetapeforseveraltimes.)Say:Afterlisteningtotheirtalk,weknowallkindsofIThavebothdisadvantagesandadvantages．Let’schecktheanswerstogether.TypeofITAdvantagesDisadvantagesTVYoucanbothlistenandwatch．Youcannotwritetofriends．WebYoucanfindinformation．Itisveryexpensive．RadioYoucanlistento

7、English．Youcannotwatchafilm．BookYoucangetinformation．Sometimesitisoutofdate．3.Post-listening: 1)(pairwork):decidewhichtypeofITisbestforyoutouserightnow.Makeyourchoiceandgiveyourreasonsbyusingthefollowingexpressions.  Ithinkthat….  Inmyopinion,….  Ibelievethat….  Iagreebecause….