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,*,*,长度单位,整理与复习,长度单位整理与复习,因为铅笔和橡皮的,长度不一样:,铅笔长,橡皮短,3个铅笔,12个橡皮,统一长度单位,因为铅笔和橡皮的3个铅笔12个橡皮统一长度单位,宽约,1,厘米,厘米,cm,米,m,宽约1厘米厘米,cm,这是一把尺子,长度为,1,米。,这把,1,米的尺子上有,100,厘米。,1,米,=,100,厘米,1,米,这是一把尺子,长度为1米。这把1米的尺子上有100厘米。1米,用,、,=,填空。,8,米,80,厘米,5,米,800,厘米,400,厘米,4,米,60,厘米,6,米,30,厘米,+70,厘米,=,()米,1,米,-8,厘米,=,()厘米,800,厘米,=,=,从长到短,把1米、78厘米、84厘米、2米1米78厘米84厘米2米,请你来判断。,1,张木床长,200,厘米。(),教室长,80,厘米。(),夏老师身高,162,米。(),黑板长,4,厘米。(),请你来判断。,在下面括号里填上适当的长度单位。,楼房的高度,15,()橡皮的长度,4,(),游泳池的宽度是,25,()回形针长,3,(),小明的身高是,136,(),小明的身高是,1,(),36,(),厘米,厘米,米,米,厘米,米,厘米,在下面括号里填上适当的长度单位。楼房的高度15(),认识尺子和了解尺子,1cm,1cm,1cm,1cm,1cm,1cm,1cm,1cm,尺子上每,10,个小格就是,1,厘米,认识尺子和了解尺子1cm1cm1cm1cm1cm1cm1cm,量一量下面物体的长度,:,图钉,长约,1,厘米,量一量下面物体的长度:图钉长约1厘米,把尺的,“,0,”,刻度,对准橡皮的左端。,右端对准数字几,,长度就是几厘米。,测量物体的长度,把尺的“0”刻度右端对准数字几,测量物体的长度,0,1,2,3,4,5,6,7,8,9,绿彩带长()厘米,紫彩带长()厘米,红彩带长()厘米,4,6,5,9-3=6,(厘米),7-2=5,(厘米),0123456789绿彩带长()厘米紫彩带长(,你还记的有关线段的知识吗?,线段有什么特点?,直的,有两个端点,可以测量长度。,你还记的有关线段的知识吗?线段有什么特点?,下列图中哪些是线段,?,为什么,?,是,是,下列图中哪些是线段?为什么?是是,下面每个图形是由几条线段组成的?,2,条,3,条,3,条,4,条,4,条,5,条,10,条,下面每个图形是由几条线段组成的?2条3条3条4条4条5条10,0,1,2,3,4,6,7,8,5,从尺的,0,刻度开始画起,画到,3,厘米的地方,你能画出一条,3,厘米长的线段吗?,012346785从尺的0刻度开始画起画到3厘米的地方你能画,画一画,:,请画出一条,8,厘米长的线段。,画一画:请画出一条8厘米长的线段。,数一数,有几条线段?,A,B,C,有()条线段,3,6,A,B,C,有()条线段,D,10,A,B,C,有()条线段,D,E,A,B,C,有()条线段,D,E,F,15,数一数,有几条线段?ABC有()条线段36ABC,谢谢!祝生活愉快,I.Listen and number.(根据你听到的内容给下面的图片排列顺序),1.-Good morning!,-Good morning!,2.-Lets make a puppet.,-Great!,3.How are you,Chen Jie?,-Fine,thank you.,4.Lets go to school!,-OK!,5.How are you,John?,-Very well.Thanks.,6.Hello,hello!How are you?,II.Listen and tick.(根据听到的内容,判断与图片所表达的意思是否一致),1.Open your eyes.,2.Close your mouth.,3.Touch your nose.,4.Touch your mouth.,5.Touch your face.,6.Clap your hands.,7.Touch your eyes.,8.Wave your arms.,9.Shake your body.,10.Stamp your foot.,III.Listen and tick.(根据你听到的内容,选出恰当的图片),1.Look at my arm.,2.Look at me.This is my ear.,3.Look at my hand.,4.Look at my face.,5.This is my mouth.,6.This is my body.,7.Look at my eyes.,8.This is my foot.,IV.Listen and circle.(听录音,圈出你所听到的单词),1.Look at my head.,2.Look at me.This is my nose.,3.I have a red mouth.,4.Look at my eyes.,5.Shake your body.,6.This is my head.,7.Look at me.This is my mouth.,8.Look at my legs.,9.I have a head.,10.I have a ear.,V.Listen and circle.(听单词,圈出单词的首字母),1.gift 2.foot 3.elephant 4.ice-cream,5.hand 6.ant 7.dog 8.cat二、听录音,选出你所听到的内容,每小题念两遍。(1 0分),1、()A.pen B.pencil C.bag,2、()A.crayon B.mouth C.eye,3、()A.arm B.ant C.apple,4、()A.black B.brown C.blue,5、()A.yes B.yellow C.your,6、()A.touch B.take C.tall,7、()A.mum B.morning C.nose,8、()A.Hello!B.Look at me!C.How are you?,9、()A.Good morning B.Thanks.C.Great.,10、()A.B b B.C c C.D d,三、听录音,选出正确的答语,每小题念两遍。(5分),1、()A.Good morning!B.Good afternoon!C.Good evening!,2、()A.Nice to meet you,too.B.Thanks.C.Great.,3、()A.Very well.B.Goodbye.C.My name is Chen Jie.,4、()A.I see brown.B.Im fine,Thank you.C.OK.,5、()A.Me too!B.Bye.C.My name is Zoom.,四、将下列句子进行排序,构成一段完整的对话。(5分),()A.Good morning,Miss Chen.,()B.How are you?,()C.Very well,thanks!,()D.Fine,Thank you.And you?,()EGood morning,Miss Wu.,谢谢!祝生活愉快I.Listen and number.(,长度单位的认识,统一长度单位,两个长度单位,1m=100cm,长度单位的计算,大小比较,排序,选择合适的单位,加减混合,线段,画线段,长度单位,测量物体的长度,测量方法,断尺测量,线段(判断,数条数),画线段,长度单位的认识统一长度单位两个长度单位,1m=100cm长度,