人教版小学数学二年级上册《认识时间》.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,认识时间,团风思源实验 学校 童爱珍,猜一猜,我有一个好朋友，滴滴答答不停地走，,叫我学习和休息，真是我的好帮手。,1,上课。,问题：钟表上现在是什么时间？,二、体会刻度与时针、分针的关系,（一）认识钟面,问题,1,：关于钟面你们都知道哪些知识？,问题,2,：你还有其他发现吗？,钟面上,一共有（,）大格,1,大格有（,）小格,一共有（,）小格,1,2,3,4,5,7,6,8,11,12,10,9,钟面上,一共有（,）大格,1,大格有（,）小格,一共有（,）小格,1,2,3,4,5,7,6,8,11,12,10,9,12,1,2,3,4,5,7,6,8,11,12,10,9,(,),(,),5,10,15,1,2,3,4,5,7,6,8,11,12,10,9,5,10,25,30,20,15,60,35,40,45,50,55,钟面上,一共有（,）大格,1,大格有（,）小格,一共有（,）小格,1,2,3,4,5,7,6,8,11,12,10,9,12,60,5,1,2,3,4,5,7,6,8,11,12,10,9,1,时,=60,分,1,2,3,4,5,7,6,8,11,12,10,9,分针每走,1,小格是,1,分钟。,1,2,3,4,5,7,6,8,11,12,10,9,5,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,40,45,50,55,11,12,10,1,3,4,5,6,9,8,7,5,9,时,5,分,9:05,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,6,时,25,分,6:25,9,时,15,分,9,：,15,11,时,55,分,11,：,55,9,时,30,分,9,：,30,6,时,40,分,6,：,40,8,时,35,分,8,：,35,1:25,1,时,25,分,8:05,8,时,5,分,6:50,6,时,50,分,认一认,拨一拨,3,时零,5,分,5,时,45,分,9,时,20,分,11,时,55,分,考考你,相信你一定行,!,3,：,10,7,：,15,1,：,20,2,：,40,10,：,45,5,：,25,6,：,50,8,：,55,这节课你学会了什么？,