小学数学二级上册认识时间.ppt

1,认识时间,二年级上册,2,你能说出钟面上的时间吗？,3,3：00,（）时,分针,时针,12,3,3,4：00,（）时,4,4,（）时,8,8：00,5,3：00,9：00,6：00,12：00,6,分针,时针,7,3,4,5,6,7,8,9,10,11,12,2,钟面上有（）个大格,12,8,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,(),1,2,3,4,(),每个大格里有（）个小格,5,9,1,2,3,4,5,7,6,8,11,12,10,9,5,10,25,30,20,15,60,35,40,45,50,55,每个大格里有（5）个小格,一共有（60）个小格,10,11,12,10,1,2,3,4,5,6,9,8,7,钟面上有12个大格,有60个小格,11,11,12,10,1,2,3,4,5,6,9,8,7,时针走1大格是1小时,12,11,12,10,1,2,3,4,5,6,9,8,7,1,分针走1小格是1分。,13,12,1,2,3,4,5,6,7,8,9,10,11,1分钟有多长呢？,14,11,12,10,1,2,3,4,5,6,9,8,7,5,分针走1大格是5分。,15,11,12,10,1,2,3,4,5,6,9,8,7,5,10,16,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,5,10,17,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,18,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,19,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,20,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,21,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,22,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,23,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,50,24,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,50,55,25,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,50,55,60,26,1,2,3,4,5,7,6,8,11,12,10,9,1时=60分,27,分针走一圈，时针走一个大格。1时 60分,=,28,11,12,10,1,2,3,4,5,6,9,8,7,12：00,29,11,12,10,1,2,3,4,5,6,9,8,7,1：00,30,11,12,10,1,2,3,4,5,6,9,8,7,1：多,31,11,12,10,1,2,3,4,5,6,9,8,7,1：多,32,11,12,10,1,2,3,4,5,6,9,8,7,1：多,33,11,12,10,1,2,3,4,5,6,9,8,7,2：00,34,11,12,10,1,2,3,4,5,6,9,8,7,4：00,35,11,12,10,1,2,3,4,5,6,9,8,7,4：多,36,11,12,10,1,2,3,4,5,6,9,8,7,4：多,37,11,12,10,1,2,3,4,5,6,9,8,7,5：00,38,11,12,10,1,2,3,4,5,6,9,8,7,9：00,39,11,12,10,1,2,3,4,5,6,9,8,7,9：多,40,11,12,10,1,2,3,4,5,6,9,8,7,41,11,12,10,1,2,3,4,5,6,9,8,7,11：多,42,11,12,10,1,2,3,4,5,6,9,8,7,12：00,43,11,12,10,1,2,3,4,5,6,9,8,7,44,11,12,10,1,2,3,4,5,6,9,8,7,45,11,12,10,1,2,3,4,5,6,9,8,7,5,4时,4：05,5分,46,11,12,10,1,2,3,4,5,6,9,8,7,5,4：15,10,15,47,11,12,10,1,2,3,4,5,6,9,8,7,5,4：30,10,30,20,25,15,4时半,48,11,12,10,1,2,3,4,5,6,9,8,7,5,4：45,10,30,20,25,15,35,40,45,49,11,12,10,1,2,3,4,5,6,9,8,7,4：55,30,35,40,45,50,55,50,11,12,10,1,2,3,4,5,6,9,8,7,5：00,30,45,15,51,谁最棒？,52,715,53,120,54,525,55,845,56,1150,57,730,740,800,120,1045,955,605,58,930,640,935,59,60,请珍惜每一分，让生命更有价值！,