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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,时 分的认识,人教新课标版三年级数学上册,12,1,2,3,4,5,6,7,8,9,10,11,看一看小钟,上面都有些什 么!,时针,分针,秒针,时针,分针,秒针,每个,大,格分成 个小格。,钟面上一共有 个小格,5,钟面上一共有,个大,格。,12,60,12,1,2,3,4,5,6,7,8,9,10,11,5,10,15,20,25,30,35,40,45,50,55,60,12,2,1,11,9,6,3,4,5,7,8,10,时针走,1,小时,分针正好走 ,是,分。,一圈,60,时=分,1,60,分针走一小格的时间是,1,分。,时针走一大格的时间是,1,小时。,分,感受一分钟,一分钟的价值,一分钟点钞机点,1500,张人民币,一分钟高速火车可行驶,1980,米,一分钟人造卫星可运行,1920,公里,一分钟生产煤炭,1902,吨、发电,106423,度,一分钟激光可走,1800,万公里,等于绕地球,450,圈,40,10,10,一节课是()分,课间休息是()分,再加上()分就是,1,小时,填,一 填,12,10,11,1 时,1,钟表上,分针,指着,12,,,时针,指着,数字,几,这时,的,时刻就是几时。,00,:,12,10,11,4 时,4:00,12,10,11,6 时,6:00,12,10,11,9 时,9:00,12,10,11,钟表上,时针,刚走过,数字,几,,分针,从,12,起,走了多少个小格,,这时的时刻就是几时几分,。,10时15分,:,10,15,12,10,11,4时45分,4:45,12,10,11,6时5分,6,:,5,0,12,10,11,8时55分,8:5 5,12,10,11,时针刚过数字几,,就是表示几时多;,要问多了多少分,,请你仔细看分针,。,说出钟面所表示的时刻。,12,6,9,3,1,2,4,5,7,8,10,11,8时,12,6,9,3,1,2,4,5,7,8,10,11,9时30分,12,6,9,3,1,2,4,5,7,8,10,11,7时35分,12,6,9,3,1,2,4,5,7,8,10,11,2时55分,选择正确的时刻,看钟面,12,6,3,9,1,2,4,5,7,8,10,11,6:10,6:50,5:50,9:05 9:50 9:01,12,6,3,9,1,2,4,5,7,8,10,11,想一想 哪种动物的睡眠时间少?,5时,6时,18时,50分,20分,把显示相同时刻的电子钟和闹钟用线连起来。,12,6,3,9,1,2,4,5,7,8,10,11,4:15,11:15,8:10,12:35,12,6,3,9,1,2,4,5,7,8,10,11,4:15,8:10,11:15,12:35,12,1,2,6,3,5,4,7,8,9,10,11,8:10,11:15,3:55,4:55,请,你,回家统计你爸爸、妈妈一天的时间安排!,课后,拓展:,
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