unit 3教案.docx

unit 3教案.docx

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unit3教案

教学课题：

Unit3Computers

授课课时

2periods

教学目标:

1.Targetlanguage目标语言

Talkaboutinformationtechnologyandrobots

Readaboutthehistoryandbasicknowledgeofcomputers

Practicemakingdecisions

重点词汇和短语

simplifylogicallytechnologicalrevolutionsolvefrom…onpersonal

asaresulttotallyso…thatnetworkWebapplicationexploreanyhowhumanrace

2.Abilitygoal能力目标

Enablestudentstolearnaboutthedevelopmentandhistoryofcomputers.

3.Learningabilitygoals学能目标

Byfinishingthetimelineandthechart,helpstudentsgraspthebasicstructureandmainideaofthepassage.

考纲要求（教学重难点）：

Teachingimportantpoints教学重难点

Understandhowdetailsareusedtosupporttopicsentences.

教学内容

T:

Haveyouputthemintherightorder?

Youwillfinditafterreadingthepassage.Nowturntopage18please.

StepIIIReading

Skimming

Getstudentsreadthewholepassageandtrytogetthemainideaofit.

Afterreading

T:

Whatdoes“I”inthetitlereferto?

Ss:

Computer.

T:

Whatisthemainideaofthepassage?

Ss:

Thepassageismainlyaboutthehistoryanddevelopmentofcomputers.

Scanning

T:

Correct!

Nowreadthepassageandfinishthetimeline.Withthistimeline,youwillhaveaclearideaofthedevelopmentofcomputer.

Checktheanswers.

T:

Thepassagehasthreeparagraphs.Findoutthetopicsentenceofeachparagraph,andthedetailsthatareusedtosupportthetopicsentences.Thencompletethechartinactivity2.

Suggestedanswers:

Para.1

Para.2

Para.3

Topicsentence

OvertimeIhavechangedquitealot.

Thesechangesonlybecamepossibleasmymemoryimproved.

Sincethe1970smanynewapplicationshavebeenfoundforme.

Supportingdetails

●Caculatingmachine

●Analyticalmachine

●Universalmachine

●PC

●Laptop

●Tubes

●Transistors

●Chips

●Network

●Web

●Communication

●Finance

●Trade

●Robots

●Mobilephones

●Medicaloperations

●Spacerockets

T:

Fromthischart,youwillknowthebasicstructureofthispassage.Asyoumayhavefoundthetopicsentencesarenotstandingtherealone,theyaresupportedwithdetailsanddate,whichmakethetopicsentencesmoreconvincing.NowIwillplaythetapeofthispassage.Listenandfindout/underlinethedifficultwordsandexpressions.

Teachergivessomeexplanations.

T:

Whatcanbe“overtime”replacedby?

Ss:

Astimegoesby.

T:

Howdoyouunderstandtheword“simplify”?

Look!

（ontheboard:

simple+-ify）.-ifyisasuffixwhichmeanstoturninto,makeorbecome.Forexample,beautify.Soifyouknowthemeaningof“simple”,youcaneasilygetthemeaningof“simplify”.Whocantellmeitsmeaning?

S:

Tomakesomethingeasierorlesscomplicated.

T:

Whatdoes“it”inline9referto?

Ss:

Itreferstothefactthatcomputerwasprogrammedbyanoperatorwhousedcardswithholes.

T:

WhywasAlanTuringcalledcomputer’srealfather?

S:

Iguessthat’sbecauseAlanmadecomputermorepowerful,whichcouldsolveanydifficultmathematicalproblem.

T:

Whatdoes“thisreality”inline15referto?

S:

Itreferstotherealitythatcomputerhadgrownaslargeasaroom.

T:

Inparagraphtwo,therearetwosentenceswhichcontaintheuseof“so…that…”structure.Underlinethemandstudycarefully.

Showthefollowingonthescreen/board:

●Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold!

●AndmymemorybecamesolargethatevenIcouldn’tbelieveit!

Helpstudentssumuptheformandfunctionofthisstructure:

Form:

so+adj./adv.+that+clause

Function:

Thisstructureisusedwhenemphasizingthedegreeoramountofsomethingbysayingwhattheresultis.

StepIVDiscussion

Dealwithactivity3onpage19.Letstudentsdiscusshowcomputershavechanged

ourlives?

Samplediscussion:

S1:

Ithinkit’simpossibletolivewithoutcomputers!

S2:

Whatmakesyousaythat?

Mygrandparentsdidn’tuseacomputerandtheywerestillabletoentertainthemselves,tooperatebigmachines,toanalyzedata,tomakerobotsandsoon.

S1:

Youareright.Butcomputersdochangethewaywelive.Theychangethewaywelearnbyprovidingdistance-learningprograms.Theychangethewaywecommunicatewiththeuseofe-mailandinstantmessenger.TheychangethewayweobtaininformationwithInternetsearchenginesuchasGoogleandBaidu.Theychangethewaywedealwithdocumentsandpictures.

S2:

Iagree.CanyouimaginewhatourlifewouldbelikeIfwecouldnotusecomputersanymore?

S2:

Wewouldgobacktotheworldwheneverythinggoesslowly.Forexample,sendmailsviatrainorairplane,whichtakesseveraldaysorevenlong;gotolibrariestosearchforinformation,wherelimitedinformationareprovided;spendlongtimetosolvedifficultmathematicalproblemsetc.Andontheotherhand,wemayhavemoretimeforoutdooractivitiesinsteadofspendingmuchtimeoncomputer.

S1:

Yes,computerschangedourlivesbothinagoodwayandinabadway.Itdependsonhowwemakeuseofit.Ihopewecanmakegooduseifit.

T:

Doyouwanttoseehowcyberfriendsanswerthisquestion?

Lookatthescreen.

Showthefollowingonthescreenorletstudentsvisitthewebpage:

（Onethescreen）

User1

Computershavemadeiteasierforustoaccessawealthofinformationandhaveallbutrenderedprinterencyclopediasobsolete.Theyhavealsomadeiteasierandcheapertoadvertiseourbusinessanywherewewishanddobusinesswithanyoneanywhereintheworld.Onthedownsidehowever,computershavealsomadeiteasierforsexualpredatorstofindvictims,forcriminalstostealourhard-earnedmoney,andtoevenstealouridentity,somethingnearlyunheardofjustafewdecadesago.Also,childrenaremorelikelytositinfrontofacomputerandchatwhentheycouldjustaseasilyspeakwiththeirfriendsonatelephoneorgooutsideandplaylikechildrenusedtobeforethe"computerrevolution".Aswithanynewtechnology,therearegoodandbadpoints,butintheendthegeneralpublicthroughtheiractionswilldeterminewhetherornotcomputershaveactuallyimprovedourlives.

User2

Ofcourse!

!

!

!

!

Theyhavechangedthewayweshop,play,chat,workandmore.

User3

Theyhavemadeusalazygeneration.

User4

Acomputerhaschangedmylifecertainlyevenstillataveryyoungage.It'sfulfilledmydreams,knowledgeandmuchmore.Forsomeit'sgainedthememploymentandgivingotherssomethingtodo.It'sopenedanewworldofgaming,chattingandfindingadviceandinformation.ICOULDN'TLIVEWITHOUTONE!

User5

Well,theymadeourliveseasier,themadeuslazierandtheygaveusthechanceto

havesomeadventurewhenwearebored.

User6

Majorityof"addicted"computeruserslack"reallife"socialskillsthesedays.

User7

Theyhurtmyeyes.

User8

Computerschangeourattitudes,thewaywelive,thewayweexpressourselves,thewaywearetooothers,viewsonlife,viewsoverall,howwedress,whatwelistentoo,whatwethinkofoneanother,howwework,interests.Basicallyeverythingwithoutcomputerswewouldn’thavetheinternetandlikenewspapersradiosmagazinesandtelevisionwegettheseallontheinternet.Thesechangehowwearesobasicallyeverythingaboutit.Alsowegetaddictedandlearnaboutthingsthatmaybeweshouldn’t.Alsocangetintotroublee.g.downloading,piracyalldonewithacomputer.Goodthingsarethatcomputershavehelpedreachforwardintothefuture.

Helpswithtechnology,educationandwillhelpthefuturegenerations.Sooneverythingwillberunbycomputersthegoodthingforusiswedon’thavetoliftafingerthebadthingiswillcomputerstakeover.

StepVHomework（retelling）

T:

Supposeyouworkforaninformationtechnologymagazine.Writeashortpassagewhichbrieflyintroducesthehistoryanddevelopmentofcomputers.Don’twriteinthefirstperson.

授课反思：

学生举一反三的能力仍人须加强

教学课题：

TheSecondPeriodLanguagestudy

授课课时

3periods

教学目标:

1.Targetlanguage目标语言

a.重点词汇和短语

revolutionnetworksimplifysummobilesolveexploretotallyanyhowfinanceartificialtechnologyintelligentapplicationWebrealitylogically

b.重点句子

Astimehadgoneby,Ihavebeenmadesmallerandsmaller.

Ihavebeenusedinofficesandhomessincethe1970s.

Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold!

Sincethe1970smanynewapplicationshavebeenfoundforme.

Ihavealsobeenputintorobotsandusedtomakemobilephonesaswellashelpwithmedicaloperations.

IhaveevenbeenputintospacerocketsandsenttoexploretheMoonandMars.

2.Abilitygoal能力目标

Enablestudentstolearnthemeaningsanduseofsomekeywordsinthereadingpassage.

Enablestudentstolearntheformandfunctionofpresentperfectpassivevoice.

3.Learningabilitygoals学能目标

Bywritingapoemusingpresentperfectpassivevoice,enablestudentstousethestructurefreelyandcreatively.

Teachingimportantpoints教学重点

Howtochangethesentencesintothepresentperfectpassivevoice.

Teachingdifficultpoints教学难点

Personalization,Inductionandimitation.

教学内容

StepIRevision

Checkthehomework.Asktwostudentstoreadthepassagetheyhavewritten.Theirpassageshouldbebriefandincludethekeyinformationorfactsaboutthedevelopmentofcomputers.

StepIIDiscoveringusefulwordsandexpressions

T:

Lookatactivity1.Thesearethemeaningsofsomewordsorexpressionsinthetextwelearnedyesterday.Findoutthesewordsorexpressions.

Checktheanswers.

T:

Nowlookatthewordsinactivity2.Doyouknowtheirmeanings?

Checktheirmeaningsinyourdictionaries.Thencompletethepassagewiththewords.

Checktheanswers.

T:

Nowactivity3.Lookatthephrasesinboldinthestory.Whatdotheyhaveincommon?

S: