2022年20以内加法教学设计 .pdf

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1、20以内加、减法复习课 教学设计房县九道乡八里小学姚维满一、教学目标(一)知识与技能通过复习，使学生对本学期所学习的20 以内加法及 20 以内不退位减法(十几减几)的相关算式进行整理、对所学计算方法进行回顾，掌握一定复习和整理方法。(二)过程与方法通过算式整理及多种形式的练习，找到知识间的联系，进一步提高学生的计算能力及问题解决能力。(三)情感态度和价值观在合作与交流中，激发学生学习兴趣，体验学习数学的乐趣。二、目标分析本课教学目标是学生在掌握了20以内加减法及 20以内不退位减法算理及算法的基础上进行的一次全面综合复习。目的是让学生在参与数学活动的过程中，不仅能进一步提高自身的计算能力;还

2、能让学生在积累一定数学活动经验的同时，了解一定的复习整理方法，初步感受复习对知识与能力提升所起的作用。三、教学重难点教学重点：通过对所学 20 以内加法及 20 以内不退位减法(十几减几)相关计算进行整理，进一步提升学生的计算能力及问题解决能力。教学难点：学生能通过观察、发现，借助已有知识经验，找到问题解决的方法并能正确计算出结果。四、教学准备课件、数字卡片、算式卡片五、教学过程(一)回顾整理1.整理 20 以内加法(课件出示)(1)找规律填表仔细观察表格中算式，在空格里填上合适的算式，并说说为什么 这样填写?(2)借规律填表游戏：对号入座。文档编码:CC2F10N8K6K6 HM4X5F3T

3、10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3

4、T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F

5、3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5

6、F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X

7、5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4

8、X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM

9、4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4(3)用规律找规律进一步观察表格，说说还有哪些发现。预设 1：学生会横着看、竖着看、斜着看。预设 2：得数小于 10 的算式

10、和得数大于10的算式。预设 3：得数是 10 的算式，得数相同的算式，调换加数位置得数不变的算式。,【设计意图】借助表格中所给算式，激活学生原有认知，回顾整理已学所有加法算式，并通过进一步观察、交流，发现表中算式排列规律的丰富性与多样性，为进一步提升学生的计算能力奠定基础。2.整理 20 以内不退位减法(十几减几算式)(1)口算练习。说说你是怎么算的。13-2 17-3 19-5 文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X

11、5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4

12、X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM

13、4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 H

14、M4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6

15、HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6

16、 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K

17、6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4(2)小组合作：完成十几减几算式的整理排列11-1 12-1 13-1 14-1 15-1 16-1 17-1 18-1 19-1 12-2 13-2 14-2 15-2 16-2 17-2 18-2 19-2 13-3 14-3 15-3 16-3 17-3 18-3 19-3,(3)

18、交流反馈：算式是怎么排列的，有什么发现?预设 1：横向排列预设 2：纵向排列(略)【设计意图】因在10 以内数的认识时已对减法表进行过整理，故此环节只重点回顾整理十几减几算式。让学生借助已有经验经历系统整理知识的过程，进一步感受不同数学知识之间的内在联系和相似内容之间的差异，学到一定的整理和复习方法。(二)拓展提升1.看谁说得又对又快两人游戏，任意抽取一道算式，快速说出结果。任意抽取结果(数字卡片)，快速说出相应算式。2.看谁做得又对又快(在里填上“”“”或“=”)8+716 2+87+3 17-2 18-3 918-10 5+9 9+6 4+66+4 3.看谁想得又对又快9+()=8+()文

19、档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4

20、文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K

21、4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5

22、K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M

23、5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10

24、M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P1

25、0M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4小结：交换两个加数，计算的结果相同。小结：9 加几的数比 8 加几的数至少

26、多 1。小结：9 加几的数比 8 加几的数至少少 2。【设计意图】通过不同形式、不同层次习题的设计，进一步练习巩固20 以内加减法的基本计算方法，提升学生利用知识间联系进行问题解决的能力。教给学生有序思考、全面看问题的思维方法，让不同学生得到不同程度的发展，为后续学习做好知识上和技能上的准备。(三)课堂小结说说这节课有什么收获?文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:C

27、C2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:

28、CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码

29、:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编

30、码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档

31、编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文

32、档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4文档编码:CC2F10N8K6K6 HM4X5F3T10W5 ZY8Q5P10M5K4