Unit5Plusandminus.doc

Unit 5 Plus and minusTeaching content:New words： plus minus New sentences： Whats plus/minus ? Its Thats right.Youre wrong.Teaching aims:1）能熟练掌握Whats plus/ minus? 及其回答Its. 并能用Thats right./Sorry. You are wrong./Oh,no.等作出评价。2）在日常交际用语的学习过程中更加熟练地听说数词1320。3）通过学习，学生能直接形象地用英语进行简单的加减法运算。4）在情境操练中灵活运用所学语言内容，开发学生的智力潜能，使学生英语思维的习惯与能力进一步提高。Teaching importance:日常交际用语Whats plus/minus?及其回答Its.的灵活表达与运用。Teaching difficulties:1、plus与minus的灵活表达。2、数词代入后整个句型的正确表达。Teaching aids:数词卡、多媒体课件、奖励用的贴花。Teaching procedure:Step1 Warm-up1. Greeting2. Sing a song : Ten little candlesT：Today Im happy. Are you happy?S: Yes. T: Lets sing a song. 3. Free talkT: Whats this/that?S: Its a TV/door/desk/bookcase.T: Excuse me, whats this? (借用学生的文具盒)S: Its a pencil box.T: Can I have a look?S: Sure. Here you are.T: Thank you.T: Oh, there are so many pencils! Guess, how many?S: T: Maybe. Lets count.S: 1, 2,3,4,5.Step2 Review the numbers1. T: Look, what number? (出示数字：5)S: Five.T: Thats right. Its five. (出示：Its.)T: What number? (出示数字：15)再出示几组：3，13；2，12；8，18评价Thats right. Sorry, youre wrong.2.(出示1-20的英文表达) Lets count from 1-20Step3 PresentationAT: Lets look. How any flowers have you got? Lets count. How many red flowers? How many yellow flowers?How many flowers?T: Yes, plus is .出示：plus(指名读，开火车)B. 出示几组算式：6+7 13+5 15+4 T: How to read them? Who wants to have a try?T: Thats right. / Sorry. Youre wrong.C出示=？T: How to read this equation(算式)?Whats six plus seven? (指名读，奖励贴花)Its thirteen.Thats right.D. Work in pairs. (注意用上句型)13+5=？ 15+4=？ 4+8=？ 2+9=？E 米奇做算式 8+7=? 6+2=? 15+4=? 13+5=? 10-7=?T: Lets ask him together. (生问，并做出相应的评价。)F. T: How to read it? (10-7=?)出示 minus(指名读，开火车)Whats ten minus seven?Its three.G. Work in pairs. (注意用上句型)17-8=？ 20-3=？ 9-7=？ 10-5=？Step4 C