新人教版二年级数学上册《认识时间几时几分》.ppt

认识时间,认识时间,一、创设情境，引出时间问题,问题：钟表上现在是什么时间？,1,2,3,4,5,7,6,8,11,12,10,9,钟面上一共有（）个大格，,每个大格里面有（）个小格。,钟面上一共有（）个小格，,12,5,60,大格,小格,1,2,3,4,5,7,6,8,11,12,10,9,(),(),5,10,15,1,2,3,4,5,7,6,8,11,12,10,9,5,10,25,30,20,15,60,35,40,45,50,55,1,2,3,4,5,7,6,8,11,12,10,9,1时=60分,1,2,3,4,5,7,6,8,11,12,10,9,1时=60分,1,2,3,4,5,7,6,8,11,12,10,9,5,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,40,45,50,55,11,12,10,1,2,3,4,5,6,9,8,7,认识时间,11,12,10,1,2,3,4,5,6,9,8,7,1,分针走1小格就是1分。,11,12,10,1,2,3,4,5,6,9,8,7,5,分针走1大格就是5分。,11,12,10,1,2,3,4,5,6,9,8,7,11,12,10,1,2,3,4,5,6,9,8,7,时针走1大格就是1时。,时针走一个大格 分针走一圈,时,60分,=,11,12,10,1,3,4,5,6,9,8,7,5,9时 5分,9:05,9时5分,9时15分9：15,11时55分11：55,6时25分,12时45分,认一认,考考你,相信你一定行!,3：10,7：15,1：20,2：40,10：45,5：25,6：50,8：55,9时30分,9：30,6时40分,6：40,8时35分,8：35,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。,12,60,1,1,5,1,60,四、应用拓展，巩固新知,做一做。,问题：你能准确写出每个钟表所表示的时间吗？,7:30,7:40,8:00,10:45,9:55,6:05,1:20,我会连线,855,715,120,525,1045,大约8时,大约9时,大约5时,