人教版小学二年级数学上册-认识时间-(24)-名师公开课教学PPT课件.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,认识时间,人教版小学数学二年级上册第七单元,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,1,2,3,4,5,7,6,8,11,12,10,9,12,60,5,1,2,3,4,5,7,6,8,11,12,10,9,1,2,3,4,5,7,6,8,11,12,10,9,5,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,40,45,50,55,1,2,3,4,5,7,6,8,11,12,10,9,1,时,=60,分,=,分针走一圈，时针走一个大格。,1,时=,60,分,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,4时,5,分,4,:05,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,4时30分或4时半,4,:,30,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,4时4,5,分,4,:,4,5,小结：,读时间的方法,要读出一个时间，要根据,时针,和分钟的位置来确定，先看时针,时针过了几就是几时多，再看分针分钟从,12,起走了几个小格,.,就是几分,合起来就是几时几分。,1:25,1时25分,8:05,8时5分,6:50,6时50分,认一认：,9,时,30,分,9,：,30,6,时,40,分,6,：,40,8,时,35,分,8,：,35,课堂小结：,通过这节课的学习，你有哪些收获呢？,*钟面上一共有,12,个大格。,*一个大格有,5,个小格。,*钟面上有,60,个小格。,*分针走一小格是,1,分，时针走,1,大格是,1,小时。,*,1,时,=60,分,作业：,请你回家统计你和爸爸、妈妈一天的时间安排。,谢谢大家,！,