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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,冀教版一年级数学下册,几十几减几（不退位）,教学目标,1.,经历两位数减一位数的口算过程并会口算。,2.,进一步体会相同数位对齐的道理。,数学王国,进入第一关,1.,填空：,46,50,（）,62,65,（）,4,3,21,70,真不错，你们这么快就闯过了第一关，继续努力吧！,2.28,7=,76,6,36,2,30,6,34,4,66 5=,练一练,:,22,61,8,28 6=,20,2,60,6,加油,!,第二关,77 5=,48 5=,8,40,70,7,43,72,36-2,在算法上有什么特点？,特点,:,减,2,要从,个位数,中减。,真棒,第二关通过。,试一试,直接说出得数。,56,4,48,2,69,5,77,5,87,7,99,9,95,3,34,2,46,52,64,72,92,32,90,80,进入第三关,十,个,十,45-(,)=(,),56-(,)=(,),1.,42,3,52,4,巩固练习,个,2.,下面的计算对吗？把不对的改正过来。,56,4=42_,39,9=20_,78,8=70_,77,7=67_,52,30,70,全课总结,掌握几十几减几,(,不退位）的计算方法，并能正确的计算其结果。,Unit6 Lets go by taxi,Lets go!,Library,library,lets go to the library.,Theatre,theatre,lets go to the theatre.,Airport,airport,lets go to the airport.,Station,station,lets go to the station.,Hospital,hospital,lets go to the hospital.,Supermarket,supermarket,lets go to the supermarket.,But how do we go there?,但是我们怎么去那里呢,?,vehicles,minibus,car,taxi,plane,bike,by,train,on,foot,A:,Shall we go toby?,B:All right./OK./Great,Look and say,A:,Shall we go to,the supermarket,by,bus?,B:All right.,A:,Shall we go to,the theatre,by,minibus?,B:Great.,A:,Shall we go to,the library,by,bike?,B:All right.,A:,Shall we go to,the hospital,by,taxi?,B:OK.,How do we go there?,Shanghai,Beijing,Nanjing,Guangzhou,hospital,1,Is this bus for the,?,Yes,it is.,No,it isn,t.,theatre,station,hospital,h,ospital,1,Is this bus for the,?,Yes,it is.,No,it isn,t.,supermarket,library,supermarket,7,Is this plane for,?,Yes,it is.,No,it isn,t.,北京,上海,西安,Is this,for the,?,Is this for?,交通工具,场所,交通工具,地名,这是去,的,(,交通工具,),吗,?(,这辆,是去,的吗,?),找规律,Its sunny.Nancy and her brother Daviad are going to a place,theyre talking about how to there.,Question:,1,、,Where are they going?,2,、,How do they go there,at last,(,最后,)?,A:Lets go to the theatre.,B:Great!How do we go there?,A:,Shall we go to the theatre by bus?,B:OK.,A:Excuse me,is this bus for the theatre?,C:No,it isnt.,A:Were late.Lets go,by taxi,.,B:,All right.,A:The theatre,please,.,D:,OK.,A:Sorry,David.Im,.Now,lets go,to Hongmei Park.,B:OK.,do we go there?,A:Lets,there,bus.,B:Excuse me,is this bus,Hongmei Park?,C:No,it,.,A:David,we go there by,?,B:,right.Lets go.,A:Hongmei Park,.,D:OK.,late,by,for,isnt,taxi,shall,All,please,How,go,Listen and fill in the blanks,Thank you!,
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