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第七单元 认识时分,人教版小学数学二年级上册,禄新乡中心小学 覃璐,3时,300,复习,1,上课。,1,2,3,4,5,7,6,8,11,12,10,9,12,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,40,45,50,55,60,12,60,5,1时=60分,一节课是( )分,课间休息是( )分,再加上( )分,就是1小时。,40,10,10,体验一小时有多长,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,认一认,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,钟面上有,个大格,,个小格。,时针走个大格是,分针走个小格是,时针走个大格,分针正好走,走大格是,时。,分,,圈,,分。,是,分。,12,60,1,1,5,1,60,=,分针走一圈,时针走一个大格。1时=60分,一分钟有多长,你在一分钟的时间内,能做些什么?,855,715,120,世界上最宝贵的是时间,同学们一定要珍惜时间!,谢 谢 指 导,