,认识时间,3时,300,复习,时针,分针,330,3时30分,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,( ),( ),5,10,15,1,2,3,4,5,7,6,8,11,12,10,9,5,10,25,30,20,15,60,35,40,45,50,55,12,60,5,1,2,3,4,5,7,6,8,11,12,10,9,1,2,3,4,5,7,6,8,11,12,10,9,5,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,40,45,50,55,分针走一小格代表1分钟，走一大格就是5分钟。,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,6:25,1,2,3,4,5,7,6,8,11,12,10,9,1时=60分,时针与分针的关系,考考你,相信你一定行!,3：10,7：15,1：20,2：40,10：45,5：25,6：50,8：55,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,4时15分,4:15,让我们1分1分地数到4时19分。,20,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,16,20,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,16,17,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,18,17,16,20,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,4时19分,4:19,19,18,17,16,11时55分 11：55,9时15分 9：15,9时30分,9：30,6时40分,6：40,8时35分,8：35,你在一分钟的时间内,能做些什么？,为什么都是10时而小朋友做的事却不一样？,动脑筋,小学一年级数学,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,1时=60分,12,60,1,1,5,1,60,。,世界上最宝贵的是时间,同学们一定要珍惜时间!,谢谢观看！ 2020,