高中computers

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1、Unit3ComputersWarmingupandReadingTeachingAims:1.Developstudentsreadingability.2.Enablethestudentstogetageneralknowledgeofthehistoryofcomputer.Teachingdifficulties:1.Getstudentstohaveagoodcommandofdifferentreadingskills.2.Enablethestudentstolearntoexpresstheirownopinions.

2、TeachingSteps:Step1.Lead-inAskthestudentstoplayaguessinggame,whosenameis“WhoamI?”.Thethirdanswerofthegamewillleadtothetopicofthisunit:computers.1.Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculating（计算）inthepast,butIamabitlonelybecausetheydon’tlikemenow.Doyouknow

3、whoIam?Abacus2.Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?Calculator3.Iamamachine,withwhichyoucantypeyourhomework,drawpictures,playgames,watchmovies,listentomusic,communicatewithyourfriends,searchinfor

4、mation…ComputerStep2.Pre-readingintroduction:1.Toshowthestudentspicturesofsomeobjectsinthetextbook,whichareusedforcalculating.Askthestudentstoputtheseobjectsinanorderaccordingtothetimewhentheyappeared.Abacus→Hugecomputer→Calculator→PC→Laptop→PDA→RobotStep3.Reading1.Skimm

5、ingwhilelisteningtothetape,askthestudentstoskimthetext,andfindoutthemainideaofthetext.What’sthemainideaofthetext?(D)A.Whatacomputeris.B.Whatacomputerisusedfor.C.Howthecomputerbecomespopular.D.Thehistoryofthecomputer2.ScanningAskthestudentstoscanthetextandfindoutsomedetai

6、ls.(1)Whatdoes“I”inthepassagerefersto?Acomputer(2)Whobuiltthefirstanalyticalmachine?CharlesBabbage(3)Whowasyourrealfather?AlanTuring(4)Whatwereyoucalledin1936?Auniversalmachine3.Comprehending(1)Askthestudentstoreadthepassageandfinishthetimelinebelow.1642:Thecomputerbegan

7、asacalculatingmachine．1822:TheAnalyticalMachinewas madebyCharlesBabbage．1936:AlanTuringwroteabooktodescribehowcomputerscouldbemadetowork．1960s:Computershadnewtransistorsandbecamesmaller．1960s:Thefirstfamilyofcomputersconnectedtoeachother．1970s:Computerswerebroughtintopeo

8、ple'shomes．Now:Computersconnectpeopleallovertheworldtogether(2)Askthestudentstoreadthepassageparagraphb