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1、学习必备欢迎下载教研课1000 以内数的大小比较教学设计冯巧丽书院河路小学2012 年 4 月 16 日学习必备欢迎下载1000 以内数的大小比较教学设计学习目标:1、经历由语言描述数的大小,到用数学符号表示数的大小的过程。2、能够正确使用 或或符号表示 1000以内数的大小。学习过程:一、课前交流1、师:同学们大家都认识我吧,那你们知道我今年多大了吗?(猜一猜)2、师:你今年多大了?你的年龄和老师的比,谁的的年龄大?就是比较哪两个数的大小?二、唤起旧知,复习引入1、师:同学们,我们已经学会了 100以内数的大小比较,那下面这些数的大小,你会比吗?(多媒体课件出示)6159 39 36 100
2、 96 69 81 师:你是怎样比的呢?2、师承上启下:小朋友们真了不起呀!不仅会读出这些数,还文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6
3、文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:C
4、G2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4
5、Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10
6、HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R
7、1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6
8、ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6学习必备欢迎下载理解了它们的组成。今天这节课冯老师就和大家一起来学习比较
9、它们的大小。揭示课题:比较千以内数的大小三、情境引入,探索新知1、师:同学们你们看过西游记吗?你最喜欢其中的哪个人物?老师最喜欢的就是那憨头憨脑的猪八戒了,因为我觉得他挺可爱的,就是有时候喜欢开小差,这不西天取经的路上他又开小差了,一个人开溜了,他去哪了呢,在路上他会遇到哪些问题呢?(多媒体课件出示情境图)2、师:你认为猪八戒应该坐哪条船呢?为什么?你是怎样想的?3、师:在大家的帮助下,猪八戒顺利的过了河,过河以后,他又会遇到谁呢?4、师:他和大象好像在比什么(比体重),要比较他们的体重,其实就是要比较哪两个数的大小呢?你能把这两个数读出来吗?上一节课我们学习了 1000以内数的组成,谁来说说
10、这两个数的组成?你能在计数器上把这两个数分别表示出来吗?(点名学生拨一拨)5、师:你会比较这两个数的大小吗?你是怎样想的?6、师:刚才我们比较的这两个数的位数相同吗?我们可以怎样很快的比较出它们的大小呢?7、师:接下来它们又在比什么呢?(课件出示)要比较他们的身高就是要比较哪两个数的大小?你能说出这两个数的组成吗?8、师:观察这两个数,它们有什么共同点和不同点呢?(引出文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6
11、ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10
12、W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6
13、文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:C
14、G2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4
15、Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10
16、HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R
17、1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6学习必备欢迎下载位数相同等)现在你会比较这两个数的大小吗?你是怎样想的呢?9、师:位数相同的两个数我们是怎样能很快的比较出它们的大小呢?小朋友们真是一流的裁判呀,让我们用掌声表扬一下自己吧!四、巩固练习师:同学们学习了比较千以内数的大小,下面冯老师要看你们能否用学会的本领去闯以下五大关:师:小朋友们真了不起,成功地闯过了上面五大关,冯老师真为你们高兴啊!五、全课总结同学们这节课大家玩得开心吗?
18、老师也很开心,但开心之余我们要想想,今天这节课我们学会了什么本领?文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V
19、10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9
20、W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7
21、H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6
22、X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H
23、8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6文档编码:CG2D8A4Z4V10 HI9W8R1T7H6 ZB6X10W8H8U6