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1、数的顺序比较大小教学目标知识与技能：1使学生掌握 100 以内数的顺序 2学会比较 100 以内两个数的大小的方法3能正确地运用“”、“”或“”比较两个数的大小过程与方法：经历数的顺序和比较大小的过程，学会比较两个数大小的方法。情感态度与价值观：培养学生探究比较两个数大小的方法，提高对数学的兴趣。教学重点数的顺序，比较大小教学难点比较两个数的大小的方法教具学具准备投影片教学步骤（一）铺垫孕伏1口算：148 15 79412789751361132开火车从 1 数到 1003填空（1）38是由（）个十和（）个一组成的（2）25里有（）个十和（）个一（3）（）个十和（）个一组成 23（4）4个十和
2、 5 个一组成的数是（）4在里填上“”、“”或“”1414 1815 1920 913（二）探究新知1教学例 7（1）填表：指导学生打开教科书第33 页看例 7，按照数的顺序，在空格里填数，教师巡视，个别辅导（2）分组讨论你从表里看到哪些有趣的排列？学生小组内发言，教师提醒学生要有序地观察如：横看、竖看、斜看等汇报讨论结果，教师引导学生有序地汇报排列规律如：每行 10 个数，第一行给出的数都是双数，要填的都是单数每一行个位上的数都相同左上角和右下角相邻两数相差11每一横行都是从小到大排列，每一竖行都是从小到大排列，横看、竖看、斜看后面的数都比前面的数大如果学生能回答出第点，教师可让学生具体举例
3、说明谁比谁大，并追问：你们还能看出哪个数比哪一个数大？（通过观察数目表，让学生充分讨论交流，激发学生学习兴趣，又为比较大小做好准备）（3）看百数表找数第 3 行第 9 个数是多少？第 8 行第 5 个数呢？你发现这两个数有什么关系？第 6 行第 3 个数是多少？第 7 行第 3 个数呢？55 前面的一个数是多少？后面的一个数呢？你发现这三个数有什么关系？64 和 66 中间的数是多少？这三个数有什么关系？同桌互相提问2完成教科书第 33 页“做一做”3教学例 8（1）教学例 8 左题指名学生表述图意板书：25 23 讨论：25 和 23 哪个数大，你是怎么想的？学生已经有了比较20 以内数的大
4、小的基础，教师引导学生在此基础上说出：25 是由 2 个十和 5 个一组成，23 是 2 个十和 3 个一组成，所以2523；或者根据数数时 25 在 23 后面，所以 2523板书：“”填空：3835 49 46 86 89（2）教学例 8 右题出示计数器比较，同桌互相说说计数器上的珠子所表示的数各是多少，再比较它们的大小汇报结果，指名板演（3）总结在比较两个数的大小时，先看十位上的数，如果十位上的数不相同，那么谁大这个数就大如果十位上的数相同，再看个位上的数，这时，谁大，这个数就大如果个位上的数也相同，这两个数就相等4完成教科书第 34 页“做一做”（三）全课小结这节课你们学到了哪些知识？
5、（四）巩固练习1填一填（1）49后面的一个数是（）（2）58前面的一个数是（），后面一个数是（）（3）比 90 小 1 的数是（）2说一说，是对还是错（1）5951 （）（2）6556 （）（3）比 50 少 1 的数是 51 （）（4）63前面一个数是 62。（）3.练习九第 3 题、第 5 题文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A
6、8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9
7、文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2
8、X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M
9、8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2
10、B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10
11、G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H
12、4M8A8 ZT8V3Z3B2B9板书设计数的顺序比较大小教学反思通过对 100 以内的数的认识及数数，掌握 100以内数的顺序，学会比较两个数的大小的方法。总体效果良好。文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C
13、10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z
14、6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3
15、Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM
16、6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ
17、8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8
18、V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9教学设计数的顺序比较大小赵 丽 花文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8
19、 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文
20、档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X
21、1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8
22、A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B
23、9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G
24、2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9文档编码:CM6C10G2X1N2 HQ8Z6H4M8A8 ZT8V3Z3B2B9