国家优秀教案设计方案《分数除以整数》教案设计方案.pdf

《国家优秀教案设计方案《分数除以整数》教案设计方案.pdf》由会员分享，可在线阅读，更多相关《国家优秀教案设计方案《分数除以整数》教案设计方案.pdf（7页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、分数除以整数的教案设计设计理念：贯彻执行新课程标准理念，培养学生的探索精神和创新意识，变被动接受为主动探索，充分发挥学生的主体作用与教师的主导地位。学习数学知识要与生活密切联系，培养学生对数学的兴趣，使人人学习有价值的数学。例题涉及到学生日常生活中经常见到，并用到的内容，与学生的生活密切联系，加上学生有一定的求知欲，从而进一步激起学生学习数学的兴趣。根据教材的内容，遵循学生的认知特点，设计本教案。教案内容：苏教版数学六年级上册教材第5556 页，例 1、试一试、练一练及练习十一第 14 题。教案目标：1.使学生经历探索分数除以整数计算方法的过程，理解并掌握分数除以整数计算方法，能正确计算分数除

2、以整数的式题。2.使学生在探索分数除以整数计算方法的过程中，理解分数除以整数的意义，发展分析、比较、抽象、概括的能力。3.使学生探究学习的过程中，进一步感受数学知识的内在联系，获得成功的体验，增强学好数学的信心。教案重点：探究分数除以整数的计算方法、会熟练进行分数除以整数的计算。教案难点：探究分数除以整数的计算方法，感悟算理。教案准备：例图，学生练习纸教案过程：一、情境导入1、炎炎夏日，老师带了一瓶4 升的清凉果汁到姐姐家做客，姐姐家有两个小孩，如果把这些果汁分给这两个孩子喝，你们认为怎样分才合适呢？指生说说怎样分，提问：这题怎样列式？为什么？（平均分成两份，求每份？42 2（升）用除法）2、

3、如果果汁是45升，你还能帮老师平均分给这两个孩子吗？【设计意图】创设学生熟悉的生活情境，激发了学生浓厚的学习兴趣。在分果汁时，利用学生掌握整数除法的经验基础，使学生再次感受整数除法的意义；通过改 4 升为45升，迁移到本课的问题，沟通了整数除法与分数除以整数意义上的联系，理解分数除法的运算意义，达到水到渠成的效果。二、探索新知1、体会分数除法的意义（1）出示例 1，思考：把45升果汁，平均分给两个小朋友喝，每人可以喝多少升？可以怎样列式？为什么？（2）师：我们知道，把一个整数平均几份，求每份是多少，用除法计算，而把45升平均分成两份，求每份是多少，也可以用除法计算。（3）揭示课题师：把一个分数

4、平均分成若干份，求其中的一份，用除法计算。今天我们就来研究分数除以整数。（板书课题：分数除以整数）文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4

5、X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10

6、L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10

7、R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4

8、X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10

9、L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10

10、R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4

11、X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G72、探索分数除以整数的计算方法。（1）提问：那452可以怎样计算呢？（2）请同学们前后左右，四人一组，共同讨论。把 4 个15平均分成 2 份，每份是 2 个15，也就是2554升45升（指生上台，指着例1 插图讲解）师：这个过程怎样用算式来体现呢？板书：45242525（用分子 42，分母还是 5）师：从这个算式可以看出，分数除以整数可以怎样计算？（如果有学生认为分数除以整数，

12、可以用分数的分子除以整数作分子，分母不变。先不要提出这种方法的局限性。）45升平均分成2 份，求每份是多少，是求45升的一半是多少，所以452 就可以用4512，结果25升。45升的125421=52（升）45升文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10

13、A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G

14、7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L

15、10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10

16、A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G

17、7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L

18、10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10

19、A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7指生说说这一过程。师：你们听明白了吗？452 表示？4512表示？它们相等吗？板书：452=4512=25（升）（3）师：谁能再说一说，45除以 2，为什么可以用4512来计算呢？12是 2 的什么数？小结：从这个算式可以看出，分数除以整数，还可以转化成什么方法进行计

20、算？3、比较，优化算法（4）师：如果45升果汁平均分给3 个小朋友喝，每人喝到多少升？怎样列式？提问：453 怎么计算呢？能不能直接用分子除以整数算出得数？为什么？可以怎么算？（5）归纳算法：师：分数除以整数，可以怎样算？（小组交流）怎样算比较简便？小结：分数除以整数通常转化成分数乘这个整数的倒数去算。想一想：用分子直接除以整数的方法虽然有一定的局限性，但在什么情况下算起来也很方便呢？(分子是整数的倍数)【设计意图】计算教案，把计算方法直接告诉学生，然后进行大量的训练。这样尽管也能让学生熟练掌握算法，但学生只知其然，不知其所以然。所以通文档编码:CP4B10L10A2G6 HP7D3R4X4L

21、10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10

22、A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G

23、7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L

24、10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10

25、A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G

26、7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L

27、10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10

28、A2G6 HP7D3R4X4L10 ZI10D6H10R6G7过计算使学生体会到第一种方法是有限制条件的，必须分子能被整数整除。而第二种方法在一般情况下都可以进行计算，可普遍使用，学生在尝试中经历失败，体悟各种方法的优劣，从而进行对比、优化，为形成共识奠定了充分的基础，同时也可提高学生学习效率，促进了学生的发展。三、巩固练习1、练一练第 1 题师：长方形平均分成了几份，每份是多少？67怎样表示？67表示什么意思？在图中指出来？得数是多少？672呢？673 呢？2、练一练第 2 题提问：分数除法和分数乘法有什么联系？明确：把分数除以整数转化为相应的分数乘法时，应该用分数乘这个整数的倒数。3、练一

29、练第 3 题独立完成，指名说说，怎么想？怎么算？4、练习十一第 2 题交流：观察每组题有什么联系？除法算式中的被除数是乘法算式中的积，而除法算式中的商是乘法算式中的一个因数。文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 Z

30、I10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6

31、 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编

32、码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 Z

33、I10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6

34、 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编

35、码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 Z

36、I10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7比较第题，明确分数除以整数的计算方法。5、练习十一第 4 题指生说题意：把27平均分成 4 份，求每份是多少；求7 个114是多少？明确：第小题的计算结果，要作为第小题的已知条件。【设计意图】：第1 题通过计算比较既有助于学生体会分数除法的意义，又有利于学生感受分数乘、除法计算方法的联系；第2 题使学生进

37、一步体会分数除法与分数乘法在计算方法上的联系和区别，从而更好地掌握分数除以整数的计算方法。这一对比性练习，促进了学生形成必要的计算技能。第3 题联系实际，应用知识，解决问题。四、全课总结这节课学习了那些内容？分数除以整数怎样算？在什么情况下，可以用分数的分子直接除以整数？五、作业布置练习十一第 1、3、4 题六、板书设计：分数除以整数452425=25（升）452451225（升）答：每人能喝到25升。文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP

38、4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D

39、6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7

40、D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP

41、4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D

42、6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7

43、D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP

44、4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D

45、6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7

46、D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP

47、4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D

48、6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7

49、D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP

50、4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D6H10R6G7文档编码:CP4B10L10A2G6 HP7D3R4X4L10 ZI10D