高一英语必修2unit31224VIP专享VIP免费

Unit3ComputersWarmingUpandReadingTeachingaims1.Knowledgeaims(1)Getthestudentstolearntheusefulandexpressionsinthispart.(2)Letstudentstolearnabouthistoryandbasicknowledgeofcomputers.1.AbilityaimsDevelopstudents'readingabilitiesandletthemlearndifferentreadingskills.3.Emotionaim:Arousestudents'greatinterestinlearningcomputersandletthemlearntousethecomputersintheirdailylives.Teachingdifficultandimportantpoints1.Letthestudentslearnmoreabouthistoryandbasicknowledgeofcomputers.2.Getthestudentstolearndifferentreadingskills.Teachingmethods1.Task-basedteachingandlearning2.Cooperativelearning3.DiscussionTeachingproceduresandwaysStep1.WarmingupTask1:Howmuchdoyouknowaboutcomputers?(Makeasurvey)1.WhatdoesITmean?Informationtechnology2.Howtospeak科学技术inEnglish?Scienceandtechnology3.WhatdoesPCmean?Personalcomputer4.Howtospeak人工智能inEnglish?Artificialintelligence5.WhatdoesPDAmean?Personaldigitalassistant6.Howtospeak笔记本电脑inEnglish?Notebookcomputer/laptop7.WhatdoesW.W.Wmean?Worldwideweb8.Whatcancomputersbeusedtodoinourdailylife?……第1页共8页Task2:Whatisit?Givesomesentencestodescribedifferentkindsofcalculatingobjectsandsomepicturestohelpthestudentstoguesswhatitis?①AnoldcalculatingmachineusedinChinauntilnow.Anabacus②Itisanewcalculatingmachinewhichcansolvealargenumberofmathematicalproblems.Acalculator③Itisbuilttosolvesomemathematicalproblems.Butitistoobig.Ahugecomputer④Itisacomputerwhichcansolveallkindsofproblemsandisusedwidelynow.APC/desktop⑤Itisakindofcomputerwhichcanbetakenconveniently(方便).Alaptop/notebookcomputerStep2.pre-readingCanyouputtheseinventionsinanorderaccordingtothetimewhentheyappeared?()Analyticalmachine（分析机）()Laptop()Calculatingmachine（计算机器）()Robot／android()PC()Universalmachine（通用机器）Step3.Reading(1)SkimmingTask1.Findoutthetopicsentencesofeachparagraph(P19.Ex2)Task2.Summarizethegeneralideaofthispassage.(2)ScanningTask1.TrueorFalse1.In1642Ibeganasacalculatingmachineandcouldsolveanymathematicalproblem.(F:solveanycalculatingproblem)2.MyrealfatherwasCharlesBabbage,whowroteabookandbuildmein1936.(F:AlanTurning)3.AfterIgotmynewtransistorsinthe1960s,Ibecamesmallerbutclevererandquicker.(T)4.Iwasbroughtintopeople'shomesinthe1970s.(T)第2页共8页5.SincemybirthIhavebeenbuilttotaketheplaceofhumanrace.(F:buildtoservehumanrace)(3)Careful-readingTask1:Lookatthetimelinebelow.Fillintheblankswithinformationfromthereadingtext.TimeThedevelopmentofthecomputers16421822TheAnalyticalMachinewasmadebyCharlesBabbage.1940sThefirstfamilyofcomputerswasconnectedtoeachother.1970snow1642:Thecomputerbeganasacalculatingmachine1822:TheAnalyticalMachinewasmadebyCharlesBabbage.1936:Thecomputergrewrapidlybothinsizeandinbrainpower.1940s:Thecomputershadgrownaslargeasaroom.1960s:Thefirstfamilyofcomputerswasconnectedtoeachother.1970s:ComputerswereusedinofficesandhomesNow:Computersconnectpeopleallovertheworldtogether.Step4.ConclusionofthetextHowdidcomputersdevelop?Acalculatingmachine→_____________→_________________→_________________→________________→_____________→________________→________________→_manynewapplicationsvocabularyandusefulexpressions1.calculatevt.(1)计算，核算e.g.Thecommitteecalculatedthecostsverycarefully.(2)估计e.g.Icalculatewhatitwillcost.(3)[美][口]以为；认为e.g.Icalculateallofthemwillcomehere.(4)打算或计划做某事e.g.Thisadvertisementiscalculatedtoattracttheattenti...