Period5SpeakingandplayingTargetlanguage目標語言1.Wordsandphrases生詞和短語expensive,equal,plus,minus,forty,fifty,sixty,seventy,eighty,ninety,hundred,onsale2.Keysentences重點句子Howmuchis/for…?I’lltakefour,please.Are…onsale?…plus/minus…equals…What’s…plus/minus…?It’s…Abilitygoals能力目標EnablestudentstoaskthepriceanddescribemathsexercisesinEnglish.Learningabilitygoals學能目標HelpstudentslearnhowtoaskthepriceanddescribemathsexercisesinEnglish.Teachingimportantanddifficultpoints教學重難點HowtodescribemathsexercisesinEnglish.Teachingmethods教學方法Speakingandgame.Teachingaids教具準備Cardswithnumbersandaprojector.Teachingprocedures&ways教學過程與方式StepIRevisionCheckthehomework.StepIILead-inT:Lookatthebox.Canyouguesswhat’sinit?(Pointtoabox.)Ss:...(Theymayguessdifferentkindsofthings.)T:Look!It’sapinkpigIboughtyesterday.It’sfatandlovely.Doyouthinkso?Ss:Yes!T:Butwhat’situsedfor?(IfSscan’tunderstand,explainittotheclass.)Ss:...(Maybedifferentanswers.)T:NowI’lltellyou.It’susedforputtingCDs.Veryinteresting,isn’t?Ss:Yes!T:Howmuchisit,doyouknow?Ss:...(Differentprices.)T:It’stwelveyuan.It’sonsale,soit’snotexpensive.Writethekeywordsandsentence“expensive/dear,onsale,howmuchis/for…,It’s…yuan”ontheBb.ExplainandhaveSsrepeatthem.ThenpractisewithSs,justlikethis:T:I’llaskoneofyoutobeaclerkandIamacustomer.S:MayIhelpyou?T:Yes,Iwanttobuyrulers.Aretheserulersonsale?S:Yes.T:Howmuchforoneruler?S:It’soneyuan.T:Oh.That’snotexpensive.Okay,I’lltaketwo.Thanks!(Write“I’lltake...”ontheBb.)S:You’rewelcome.StepIIIPresentationRole-play.DealwithPart1onPage56.Inthisstep,Ssdosomeoralpracticeinpairsusingthetargetlanguage.Theyshouldstandinfrontoftheclasstopresenttheirdialogues.Putsomepens,erasers,books,pencil-boxes,rulersontheteacher’sdesk.Asampleconversation:S1:MayIhelpyou?S2:Yes,I’dlikeapen,please.Howmuchisthis?S1:Twentyyuan.S2:Oh,that’stooexpensive.Arethosepensonsale?S1:Yes!S2:Howmuchforonepen?S1:Eightyuan.S2:OK,I’lltaketwo,please.Aredoneandablackone.Thanks!S1:You’rewelcome.Goodbye!S2:Bye!Askmorepairstoactouttheirconversationsinfrontoftheclass.StepIVGame1.CountnumbersT:Nowlet’splayagame.Countnumbersfromonetoonehundred,butyoucan’tsaythenumberswithsevenandthetimesofseven.Ifsomeonedoeswrong,heorsheshouldsingasongforthewholeclass.Languagepoints:Payattentionto“twenty,thirty,forty,fifty,sixty,seventy,eighty,ninety”.Thenumbersaboveallendwith“-ty”.2.AuctionT:ThisisabasketballthatYaoMingused.Howmuchisit,doyouthink?S1:Fiftyyuan.S2:Fivehundredyuan.S3:Fivehundredandfifthyuan.Givethebasketballtotheonewhobidthehighestprice.Askonestudenttobeanauctioneer.S:ThisisZhouJielun’sT-shirt.Howmuchisit?...GivetheT-shirttotheonewhobidthehighestprice.S:Thisis...Practise“Howmuchis/for”andnumbersbyplayingthegame,auction.StepVAskandanswerWritethestructures“…plus/minus…equals…What’s…plus/minus…It's...?”ontheBb.Explainthemtotheclass.Thenaskandanswerwithcardswithnumbers.Forexample:T:What’sthreeplusfour?S:It’sseven.T:What’seightyminusthirty?S:It’sfifty.OrletSsdescribewithsentences:Whatcantheyseeonthecards?Forexample:Twentyplussixteenequalsthirty-six.Forty-sevenminustwenty-twoequalstwenty-five.AskmoreSstopractisethesentencesorletthempractiseinpairs.Languagepoints:“…plus/minus…equals…”.句中plus是介詞“加上”，也可用and代替；equal是動詞，意為“等于”，此句中也可用be動詞代替，通常把算式看作一個整體，所以equal和be動詞都用單數(shù)形式。.Fiveplus/andnineequals/isfourteen.StepVICompetitionShowsomemathsexercisesonthescreen.Saythemwith“…plus/minus…equals…”.Dividetheclassintotwogroups(boysandgirls)tohaveacompetition.ThegroupwhocansaythemostexercisesandanswersinEnglishinoneminutewillwinthegame.StepVIIHomeworkI.Putthesesentencesinthecorrectordertomakeupadialogue.(Page60:PartIII,B)II.Accordingtowhatwehavelearntinthisperiod,writeaconversationbetweenyouandaclerk.Exercises:Choosethecorrectanswer.()theoldbookonsale?A.DoesB.DoC.AreD.Is()2.—Whatistwenty____two?—_____eighteen.A.plus,It’sB.and,They’reC.minus,They’reD.minus,It’s()3.—____foronebook?—Tenyuan.A.WhatB.HowC.HowmanyD.Howmuch()4.Twoplusfour_____six.A.equalsB.isequalC.toequalD.equal()5.—Howmucharethesecoats?—______.A.TheyaresmallB.FiftyyuanC.TheyareyellowD.Theyarenew()6.Here_____manybooksonsale.A.isB.areC.haveD.has()7.Therearemany_____inthefridge.A.bottleapplejuiceB.bottlesofapplejuiceC.bottleofapplesjuiceD.bottleapplejuices()8.Look!Thereare____birdsinthetree.A.twohundredsB.fortynineC.