[一年级数学]一年级下册认识时间.ppt

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1、认识时间,第一关,认识钟面,1,2,3,4,5,7,6,8,11,12,10,9,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,1,2,3,4,5,7,6,8,11,12,10,9,5,1,2,3,4,5,7,6,8,11,12,10,9,5,10,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,1,2,3

2、,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,40,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,40,45,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,40,45,50,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,40,45,50,55,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25

3、,30,35,40,45,50,55,60,1,2,3,4,5,7,6,8,11,12,10,9,5,10,25,30,20,15,60,35,40,45,50,55,钟面上一共有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,钟面上一共有（）个大格，每大格里有（）个小格，一共有（）个小格。,12,5,60,1,2,3,4,5,7,6,8,11,12,10,9,6 时,6:00,1,2,3,4,5,7,6,8,11,12,10,9,12时半,12:30,你们过关了！,恭喜恭喜,第2关,认识时、分,1,2,

4、3,4,5,6,7,8,9,10,11,12,1小时,时针走一大格，时间经过 1 小时。,1,2,3,4,5,6,7,8,9,10,11,12,分针走一圈，时间经过 分。,60,分针走一小格，时间经过 1 分钟。,5分,10分,20分,45分,55分,60分,1,2,3,4,5,6,7,8,9,10,11,12,1,2,3,4,5,6,7,8,9,10,11,12,1时=60分,一节课是（）分，课间休息是（）分，再加上（）分，就是1小时。,40,10,10,体验一小时有多长,一分钟有多长,一分钟,一分钟可以生产600瓶可乐,银行点钞机点1500张人民币,中央电视台播音员播180个字,一分钟能生

5、产2台彩电,一分钟能生产1600支铅笔,一分钟能做些什么呢？,你们过关了！,贺喜贺喜,第3关,认识几时几分,1,2,3,4,5,7,6,8,11,12,10,9,9:05,9时5分,0,1,2,3,4,5,7,6,8,11,12,10,9,9时15分,9:15,1,2,3,4,5,7,6,8,11,12,10,9,9时30分,9:30,1,2,3,4,5,7,6,8,11,12,10,9,9时55分,9:55,1,2,3,4,5,7,6,8,11,12,10,9,你们又过关了！,太棒了,第四关,拨时游戏,1、动手操作。在你的钟面上拨出6时25分。,2、小组合作。1人说时间，1人拨时间。,3、自主探究。拨一个自己喜欢的时间，并说说你在这个时间干什么？,下,课,