小学数学二年级认识时间公开课ppt课件

.,认识时间,二年级上册,.,你能说出钟面上的时间吗？,3,3：00,（）时,分针,时针,12,3,.,3：00,9：00,6：00,12：00,分针指着12，时针指着几就是几时,.,3,4,5,6,7,8,9,10,11,12,2,钟面上有（）个大格,12,.,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,.,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,.,11,12,10,1,2,3,4,5,6,9,8,7,时针走1大格是1小时,.,11,12,10,1,2,3,4,5,6,9,8,7,1,分针走1小格是1分。,.,11,12,10,1,2,3,4,5,6,9,8,7,5,分针走1大格是5分。,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,5,10,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,半小时,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,50,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,50,55,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,50,55,60,.,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,50,55,60,.,12,1,2,3,4,5,6,7,8,9,10,11,1分钟有多长呢？,.,1,2,3,4,5,7,6,8,11,12,10,9,1时=60分,时针走一个大格，分针走一圈。,.,11,12,10,1,2,3,4,5,6,9,8,7,12：00,.,11,12,10,1,2,3,4,5,6,9,8,7,1：00,.,11,12,10,1,2,3,4,5,6,9,8,7,1：多,.,11,12,10,1,2,3,4,5,6,9,8,7,1：多,.,11,12,10,1,2,3,4,5,6,9,8,7,1：多,.,11,12,10,1,2,3,4,5,6,9,8,7,2：00,.,11,12,10,1,2,3,4,5,6,9,8,7,4：00,.,11,12,10,1,2,3,4,5,6,9,8,7,4：多,.,11,12,10,1,2,3,4,5,6,9,8,7,4：多,.,11,12,10,1,2,3,4,5,6,9,8,7,5：00,.,11,12,10,1,2,3,4,5,6,9,8,7,9：00,.,11,12,10,1,2,3,4,5,6,9,8,7,9：多,.,11,12,10,1,2,3,4,5,6,9,8,7,.,11,12,10,1,2,3,4,5,6,9,8,7,11：多,.,11,12,10,1,2,3,4,5,6,9,8,7,12：00,.,11,12,10,1,2,3,4,5,6,9,8,7,.,11,12,10,1,2,3,4,5,6,9,8,7,.,11,12,10,1,2,3,4,5,6,9,8,7,5,4时,4：05,5分,.,11,12,10,1,2,3,4,5,6,9,8,7,5,4：15,10,15,.,11,12,10,1,2,3,4,5,6,9,8,7,5,4：30,10,30,20,25,15,4时半,.,11,12,10,1,2,3,4,5,6,9,8,7,5,4：45,10,30,20,25,15,35,40,45,.,11,12,10,1,2,3,4,5,6,9,8,7,4：55,45,50,55,.,11,12,10,1,2,3,4,5,6,9,8,7,5：00,30,45,15,.