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1、1/4 多位数乘一位数(进一位)导学案班级:姓名:小组:主备人:闫振常一、成功目标(2 分钟)1、我要掌握两位数乘一位数(不连续进位)的计算方法。2、我会用学到的知识解决生活中的数学问题。3、我能感受到数学就在我身边。二、成功自学(自主学习、享受探究乐趣)(5 分钟)1、课前准备:(1)5 36=297=683=4756=(2)竖式计算:112=224=2342=2、看数学书 76 页情境图,例 2。(1)从图中你知道的数学信息是:连环画每套()本,王老师买了()套。(2)怎样算王老师一共买了多少本连环画?(3)请你先估算:(4)竖式可以这样列:想:先用 3 和个位上的 8 相乘的 24,因为
2、 2410,向十位进 2,在个位上写 4,再用 3 和十位上的 1 相乘得 3,再加上刚才进上来的2,等于5,写在十位上。见上图。提醒:计算因数是一位数的进位乘法时,要注意:计算要从各位算起,哪一位上相乘的积满几十就要向前一位进几。进几就把几小小的写在横线上。同学们,四年级的王老师觉得咱们班的图书角特别漂亮,并且认为那些图书特别有意识,就也想去买一些书,咱们一起去给他们做个参考吧!1 8 2 3 _ 5 4 2/4 3、成功合作、成功互学:如果王老师想买两套,她要买多少本书哪?如果每本书要 3 元,买这些书要多少钱?试着计算一下吧:四、展示、点拨(15 分钟)五:课堂小测验(5 分钟)列竖式计
3、算:1、27 2=15 5=214 3=2、12 8=13 7=16 6 =14 5=18 3=17 4 =五、课后一练:1、磐石宾馆有36 间客房,每间客房可以住3 人,请你帮忙算一下,磐石宾馆可以住多少客人?2、四年级一班的两位老师周末想带着他们班的34 名同学一起去做物资交流会的海盗船。听说海盗船的票价是成人8 元,学生 3 元。可是走到路上才发现只带了120 元钱,他们的钱够吗?文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M
4、10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X
5、3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL
6、5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P
7、3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编
8、码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q
9、3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S
10、3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P43/4 六、学习收获:(1 分钟)把你这节课的体会告诉老师吧:附:教案反思:多位数乘一位数不连续进位教案反思曹县第一实验小学:闫振常经过这一节课的教案,我的感触很多。一、关于课前对班级情况的了解我做得不够。我教案的是一节笔算乘法的内容之一,例3 的教案和前面几个例子的教案结果以及老师的教案风格等都有很大的联系,但是我只是自己在写教案,没有在学生原有的基础上写这份教案,这是这节
11、课出现状况的原因之一。三(1)班的部分学生已经对连续进位的笔算有一定的了解,有些学生甚至遇到这样的连续进位能够直接在算式上进行口算了,在这样的情况下针对学生的实际情况能够对教案内容做出适当的调整是在我没有做好的。所以在统一教案后出现了有些同学已经能够解决这样的问题了,但是有些同学还有一定的难度。二、是有关估算的内容。在本节课教案249 前先让学生估一估,对于部分学生来说这个估算意义不大,因为在相同的时间里他已经能够进行精算了,但是对另外的学生来说,这样的估算却是有必要的。估算本身就是很难教案的内容,在出现这样的差异的情况下,如何进行估算的教案,才能使估算真正体现其价值和意义,这是我非常困惑的。
12、三、教案细节上能够体现一个教师的教案水平。优秀教师能够将各个细节有层次的展示给学生,让学生在严谨的一步一步中明白所学的内容,并通过最后老师的总结对所学有一个全面的认识。到今天,我明白这是我要努力追求的。现在的我能教给学生知识,能够帮助他们学习,但要做到有条理和系统的整理所学知识,我的能力还远远不够。首先要做到对各部分教材有一个深入、细致、系统的了解,并且多看、学别人的教案,教案方法和过程。学习他人的经验还是我要面对的主要方面。四、我想我还是有些高估自己的能力了,主要体现最后一个环节。文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6
13、S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4
14、M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10
15、X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 Z
16、L5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8
17、P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档
18、编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7
19、Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P44/4 原本我设想让学生四人小组讨论,把提出的数学问题和解决方法都写在练习本子上,而我在其中选择一些典型的进行教案。这一环节能够充分体现学生的主动性。但是,在实际操作中,我发现学生提出的问题都比较统一,大多都在问几个篮球需要多少元钱,以至我在教案中草草收场,并且忽略了一些细节。这
20、样一来空出了比较多的时间,而我也并未设想到这些,以至接下来没什么内容让写生来操作了,这是我的一大失误。五、最后我要说说的是一个教师的情绪在一节课中的作用。如果教师对教案内容缺乏激情的话,那就更不用说学生了。所以,无论发生什么样的情况,作为老师就要用自己最饱满的精神状态,带领学生进行学习活动。短短的一节课让我再次认识到我还有那么多的不足,在反思如何能够有所进步的同时,我也找到了方向,希望能够在今后改掉那些不足之处。2012.11.26 文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P
21、3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编
22、码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q
23、3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S
24、3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M
25、10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X
26、3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4文档编码:CZ7Q3Y2K6S3 HP4M10U10X3I4 ZL5U7Y8P3P4