新人教版小学数学一年级下册《认识时间》课件.ppt

认识时间,分针长长指12 ，时针指几是几时。,分针长长指着 6，时针指过几，就是几时半。,实验二小夏季作息时间表,8:15,早自习,10:00,12:10,12:50,3:15,课间操,吃午餐,午休,放学,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,钟面上一共60个小格。,1,2,3,4,5,7,6,8,11,12,10,9,5,10,25,30,20,15,60,35,40,45,50,55,9时5分,6时25分,12时45分,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,=,我会连线,谁最棒？,855,715,120,525,1045,大约8时,大约9时,大约5时,