初二教案_第4单元

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1、TeachingplanofChapterfourComputertechnologyChaptertopicoverview:Thischapterisaboutcomputersandothermachines.Themainpassageisasetofshorttextsaboutdifferentaspectsofcomputersandtheireffectsonourlives.TheListeningsectionrequiresstudentstolistentoatelephoneorderandcompleteanorderformforsomeoffic

2、eproducts.TheLanguagesection,whichintroducesthecomparativeandsuperlativeofobjectives,featuresexercisesaboutcomparingproductsincludingsuitcasesandcameras.IntheSpeakingsection,studentsneedtoconductasurveyabouttheuseofcomputersathome.TheWritingsectionincludesataskinwhichstudentshavetocomparetwo

3、radio-controlledcars,andthentwoflats.Finally,theUsingEnglishsectiondealswithabbreviations.Pre-chapteractivities:1.Brieflydiscusswhetherstudentshavecomputersathome,andwhattheydowiththem.2.Askstudentstotellyouanytechnicalwordsassociatedwithcomputersthattheyknowandlistthemontheblackboard・Writet

4、hesewordsontheboard,alongwiththeirmeanings.•PC-一apersonalcomputer•Microchip-®晶片（微型集成电路片）•Virus■一sth.Whichgetsintoaprogramandharmsit•Data一-information•File-一acollectionofdatastoredtogethe匚•Software…programs•Hardware…themonitor（监视器，监听器；检测器）,keyboard,drive,etc.•Laptop…asmall,portablepersonalcom

5、puter（便携式电脑）•Graphics一-pictures•Command—anordertothecomputer•E-mail™electronicmail•Modem—adevicewhichlinksyourcomputertothetelephonesystem（调制解调器）•Multimedia—acombinationofsound,movingpicturesandtext.•Network--asystemthatlinkstwoormorecomputerstogether.PeriodOneTeachingtarget1.Toknowsomenewwo

6、rdsaboutthereadingpassage.2.Tohaveabrainstormtoknowaboutsomeknowledgeabouttheelectricity.3.Tohaveapre-readingactivities.Cartoontalk1GivestudentssometimetolookatthecartoononSBA,page43.Tellthemtoreadthesentencescarefully.2.Meaningofthecartoon:Thiscartoon,unlikemostoftheothers,doesnotdependonap

7、unorverbaljoke.ThehumorcomesfromtheideathatanATMmachinecouldbealive,andcouldbearelationofthelittlerobot.(Infact,weoftentalktomachinesasiftheywerealive——particularlywhenweareangrywiththembecausetheywillnotwork.)Thecartoonalsointroducesthetopicofmach