商和余数中间有的用“多”、有的用“余”、有的用“剩”、有的用六个小圆点，你认为哪种表示的方法更简捷？
shang he yu shu zhong jian you de yong duo you de yong yu you de yong sheng you de yong liu ge xiao yuan dian ni ren wei na zhong biao shi de fang fa geng jian jie
幕，像剩余的这些数，你们能给它起个数学名字吗？生：余数。师：你们真棒，和数学家们想的一模一样。师：在
mu xiang sheng yu de zhe xie shu ni men neng gei ta qi ge shu xue ming zi ma sheng yu shu shi ni men zhen bang he shu xue jia men xiang de yi mo yi yang shi zai
块)16÷7＝2(把)余2(把)17÷7＝2(枝)剩3(枝)18÷7＝2(本)……4(本)师：请看屏
kuai )16 7 2( ba ) yu 2( ba )17 7 2( zhi ) sheng 3( zhi )18 7 2( ben ) 4( ben ) shi qing kan ping
组派1人展示）师：（实物投影仪）展示每组一个学生的算式。14÷7＝2(个),15÷7＝2(块)多1(
zu pai 1 ren zhan shi shi shi wu tou ying yi zhan shi mei zu yi ge xue sheng de suan shi 14 7 2( ge ),15 7 2( kuai ) duo 1(
2本，剩余4本。师：你们能把分东西的过程和结果用一个除法算式表示出来吗?写在1号答题卡上。（巡视，每
2 ben sheng yu 4 ben shi ni men neng ba fen dong xi de guo cheng he jie guo yong yi ge chu fa suan shi biao shi chu lai ma ? xie zai 1 hao da ti ka shang xun shi mei
一个了。第三组生：平均每人分2把，剩余2把。第四组生：平均每人分2枝，剩余3枝。第五组生：平均每人分
yi ge le di san zu sheng ping jun mei ren fen 2 ba sheng yu 2 ba di si zu sheng ping jun mei ren fen 2 zhi sheng yu 3 zhi di wu zu sheng ping jun mei ren fen
表示？生：0。第二组生：平均每人分2个，剩余1个。师：剩余的一块橡皮为什么不继续分了？生：每人不够分
biao shi sheng 0 di er zu sheng ping jun mei ren fen 2 ge sheng yu 1 ge shi sheng yu de yi kuai xiang pi wei shen me bu ji xu fen le sheng mei ren bu gou fen
们组平均每人分了几个？有剩余吗？第一组生：平均每人分2个，没有剩余口袋妖怪绿宝石。师：盒子里没有了卷笔刀用什么数来
men zu ping jun mei ren fen le ji ge you sheng yu ma di yi zu sheng ping jun mei ren fen 2 ge mei you sheng yu kou dai yao guai lv bao shi shi he zi li mei you le juan bi dao yong shen me shu lai
：能。师：下面就请各小组组长上来领礼物。（各小组依次领礼物，然后动手平均分。）师：都分好了吗？说说你
neng shi xia mian jiu qing ge xiao zu zu chang shang lai ling li wu ge xiao zu yi ci ling li wu ran hou dong shou ping jun fen shi dou fen hao le ma shuo shuo ni
你们带来一些小礼物；但口袋妖怪绿宝石他们有个小小的要求：请小组长把礼物要平均分给各小组的7个同学，你们能做到吗？生
ni men dai lai yi xie xiao li wu dan kou dai yao guai lv bao shi ta men you ge xiao xiao de yao qiu qing xiao zu chang ba li wu yao ping jun fen gei ge xiao zu de 7 ge tong xue ni men neng zuo dao ma sheng
就从分东西开始吧。二、动手实践，形成算式：师：听说老师要来这里给你们上课，我班上的小朋友托我一定要给
jiu cong fen dong xi kai shi ba er dong shou shi jian xing cheng suan shi shi ting shuo lao shi yao lai zhe li gei ni men shang ke wo ban shang de xiao peng you tuo wo yi ding yao gei
的，好吗？生：16号。师：红色，对吗？生：对。师：你们想不想学到这个本领？（生齐答：想。）师：那我们
de hao ma sheng 16 hao shi hong se dui ma sheng dui shi ni men xiang bu xiang xue dao zhe ge ben ling sheng qi da xiang shi na wo men
来点掌声好吗？（全班学生集体鼓掌）谢谢！师：继续猜！生：3号。师：蓝色，对吗？师口袋妖怪绿宝石：给我提个难度大点儿
lai dian zhang sheng hao ma quan ban xue sheng ji ti gu zhang xie xie shi ji xu cai sheng 3 hao shi lan se dui ma shi kou dai yao guai lv bao shi gei wo ti ge nan du da dian er
不看屏幕就能猜出它是什么颜色？不信，谁来试试？生：11号。师：黄色。大家说对不对？生：对。师：对了，
bu kan ping mu jiu neng cai chu ta shi shen me yan se bu xin shui lai shi shi sheng 11 hao shi huang se da jia shuo dui bu dui sheng dui shi dui le
识。我们先来玩一个小游戏好吗？请看屏幕，这里有18个彩口袋妖怪绿宝石色小球，你们可以任意说出其中一个球的号码？老师
shi wo men xian lai wan yi ge xiao you xi hao ma qing kan ping mu zhe li you 18 ge cai kou dai yao guai lv bao shi se xiao qiu ni men ke yi ren yi shuo chu qi zhong yi ge qiu de hao ma lao shi
激趣，导入新课：师：同学们，今天我请了一位小组手，他将协助老师完成这节课的任务，请站起来让大家认识认
ji qu dao ru xin ke shi tong xue men jin tian wo qing le yi wei xiao zu shou ta jiang xie zhu lao shi wan cheng zhe jie ke de ren wu qing zhan qi lai rang da jia ren shi ren
学重难点用竖式计算，理解“余数要比除数小”的道理。教学准备多媒体课件、学具口袋妖怪绿宝石、答题卡。教学过程一、设疑
xue zhong nan dian yong shu shi ji suan li jie yu shu yao bi chu shu xiao de dao li jiao xue zhun bei duo mei ti ke jian xue ju kou dai yao guai lv bao shi da ti ka jiao xue guo cheng yi she yi
2、引导学生自主探索，使学生掌握用竖式计算有余数除法的方法。3、培养学生作、观察和初步的概括能力。教
2 yin dao xue sheng zi zhu tan suo shi xue sheng zhang wo yong shu shi ji suan you yu shu chu fa de fang fa 3 pei yang xue sheng zuo guan cha he chu bu de gai kuo neng li jiao
教材(人教版)小学数学三年级上册第50—52页。教学目标1、使学生结合具体情境，口袋妖怪绿宝石感知有余数除法意义。
jiao cai ( ren jiao ban ) xiao xue shu xue san nian ji shang ce di 50 52 xie jiao xue mu biao 1 shi xue sheng jie he ju ti qing jing kou dai yao guai lv bao shi gan zhi you yu shu chu fa yi yi
有余数除法的意义和计算》课堂教学实录执教：湖北省襄樊市新华路小学 唐立华教学内容义务教育课程标准实验
you yu shu chu fa de yi yi he ji suan ke tang jiao xue shi lu zhi jiao hu bei sheng xiang fan shi xin hua lu xiao xue tang li hua jiao xue nei rong yi wu jiao yu ke cheng biao zhun shi yan