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1、Unit3ComputersPeriod2Warmingupandpre-reading教学设计I.Teachingcontents：Warmingupandpre-readingII.Teachingaims：1）Toinspirestudentswithstronginterestinthecomputersandimprovestudents’Englishability.2).LearnhowtodescribedifferentkindsofcomputersinEnglish.3).Tolearnandrememberthefollowingwords:abacus;calcul
2、ator;PC;laptop;PDA;robot;development;universal;III.Keypoints&DifficultiesKeypointsTalkaboutthedevelopmentofcomputers.DifficultiesRememberthenewwords.IV.Teachingprocedure:.StepI:GreetingsTheteachergreetthewholeclass.StepII:Wordspreview:Teacherleadthestudentspreviewsomenewwordsofthisunit.StepIII:Warm
3、ingup1.Warmingupbyguessingtheriddles.(1).Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydon’tlikemenow.(2).Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’ms
4、mallenoughforyoutotakemewithyou.(3).IamsosmallinsizethatIcanfitinyourhand.Iusuallyhaveasmallscreenusuallybiggerthanadigitalphone,howeversmallerthanthesmallestlaptop,I’magreatwaytostoretelephonenumbers,accesstheinternet,makecalculations,andsoon.(4).Iamverysmall.Icanbeusedforcalculating.InChina,aloto
5、fstudentsusemewhensolvingmathematicalproblems.(5).Iamverybig.Scientistsusemetosolvesomemathematicalproblems.(6).I’mamachinethatworksautomatically.Icandoawidevarietyoftasks,especiallysuitablefordoingjobstooboring,difficult,ordangerousforhumanbeings.(7).I’masmall,relativelyinexpensivecomputerdesigned
6、foranindividualuser.I’mbasedonthemicroprocessortechnology.Athome,peopleusemetosurftheInternetandplaygames.(answers:1.abacus,2.laptop;3.PDA;4.calculator;5.hugecomputer;6.robot;7.PC)Teacherdescribesthethings,askstudentstrytoguess,1.Numbertheorderoftheabovrthingsaccordingtothedevelopmentofcomputers.(a
7、bacus→culculator→hugecomputer→PC→laptop→PDA→robot)StepIV:Discussion:Studentsmaybeveryfamiliarwiththecomputer,soletthemdiscussthefollowingquestionwiththeirgroupmembers.Doyouknowinwhatwayscomputersareusedtoda
