Lesson19Howmany?一、教学内容20以内加减法二、教学目标1、巩固数词类单词1-20,及句型Howmany----canyousee?2、能听懂、会说日常交际用语What’s…plus/minus…?It’s…That’sright/Sorry,youarewrong.三、教学重点能听懂、会说日常交际用语What’s…plus/minus…?It’s…That’sright/Sorry,youarewrong.四、教学难点1、能听懂、会说日常交际用语What’s…plus/minus…?It’s…That’sright/Sorry,youarewrong.2、能正确理解运用plus,minus进行加减法的运算五、教具准备1、数字1至20卡片,加减法的算式卡片2、磁带及录音机。3、制作相关课件。4、代表对错的哭脸和笑脸的翻牌六、教学过程Step1.GreetingT:Hello,boysandgirls.Ss:Hello,MissQian.T:Howareyouthismorning?Ss:Fine,thankyou.Andyou?T:I’mfine,too.Thankyou,sitdown,please.Step2.Revision1.T:Now,boysandgirls.Todaywe’llgoontolearnthenumbers.First,let’scountthenumbersfrom1—20.OK?(Sscountthenumbersfrom1—20.)2.Askthestudentscountthenumbersfrom1—20onebyone.3.Playthenumbergame.Lookatthecomputerandsaythenumberquickly.4.Lookatthecomputerandanswerthequestion:T:Howmany-----canyousee?1Ss:Icansee------.(在物品数量呈现上不是全部呈现,而是通过课件逐步递增)5.Sayachanttogether.Step3.Presentation1.T:Nowboysandgirls.Let’splayagame.Listenandsaythenextnumber.Forexample:Isay“one”,yousay“two”OK?2.T:Now,let’sexchange.Isay“two”,yousay“one”.(在游戏过程中,教师对学生的反映,做出“That’sright.”“Sorry,you’rewrong.”的评价,同时出示哭脸和笑脸的翻牌。用此法呈现新句型。)Teachthetwosentences:That’sright./Sorry,you’rewrong.Step4.DrillT:Now,let’splayanothergame.Look,Ihavemanycards1—20.I’lltakeonecard.Andaskastudenttoguess:What’thenumber?Otherstudentssay:That’sright./Sorry,you’rewrong.(通过此游戏,既可以使学生练习两个新学句型,然后将学生抽中的4个数字:10,5,20,12贴在黑板上,也为下一步新授做了铺垫。)Step5.Presentation1.T:Now,look!What’s10plus5?It’s15.(教师边说边在黑板上已贴的数字间填上加号和等于号。)Teach“plus”andthisnewsentence.2.教师出示算术卡片:T:What’s7plus8?Ss:It’s-----.T:What’s2plus11?Ss:It’s-----.(在两条算式结束后,不呈现算术卡片,再请学生回答两条算式:9+10=?3+11=?)3.Ssasktheteacher:Ss:What’s----plus------?T:It’s-------.Ss:That’sright./Sorry,you’rewrong.4.T:Now,look!What’s20minus12?It’s8.(教师边说边在黑板上已贴的数字间填上减号和等于号。)Teach“minus”andthisnewsentence.5.教师出示算术卡片:2T:What’s18minus4?Ss:It’s-----.T:What’s10minus8?Ss:It’s-----.(在两条算式结束后,不呈现算术卡片,再请学生回答两条算式:14-6=?20-7=?)6.Ssasktheteacher:Ss:What’s----minus------?T:It’s-------.Ss:That’sright./Sorry,you’rewrong.Step6.PairworkA:What’s----plus/minus------?B:It’s-------.A:That’sright./Sorry,you’rewrong.Step7.CompetitionT:Now,boysandgirls.Let’shaveacompetition.Onegroupask,andtheothergroupanswer.(两组之间举行算术比赛,一组问一组答,一个接一个,训练学生的速度和反映能力。)Step8.DialogueAskthestudentsreadthedialogueafterthetape.Thenreadittogether.Step9.Practice(出示课件)T:Look,whatpluswhatisfive?Canyouguess?(让学生根据课件中的算式?+?=5,来扩展思维进行想象,回答问题)Drill:?+?=11?-?=2?+?=13?-?=7?+?=19?-?=11Step10.SongAskthestudentstosingasong<>Step11.Homework1.Readthedialogue2.Dotheexercisebook3