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1、第七单元 认识时间,人教版小学数学二年级上册,教学内容: 1、认识时和分,知道1时=60分; 2、认识时间,会用几时几分表示时间; 3、解决与时间有关的简单的实际问题。,3时,300,复习,1,2,3,4,5,7,6,8,11,12,10,9,12,1,2,3,4,5,7,6,8,11,12,10,9,( ),( ),5,10,15,1,2,3,4,5,7,6,8,11,12,10,9,5,10,25,30,20,15,60,35,40,45,50,55,12,60,5,1,2,3,4,5,7,6,8,11,12,10,9,1时=60分,1,2,3,4,5,7,6,8,11,12,10,9,1
2、,2,3,4,5,7,6,8,11,12,10,9,5,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,40,45,50,55,10,1小格,5,15,20,25,30,35,40,45,50,55,60,12,5,60,1,2,3,4,5,6,7,8,9,10,11,12,分针走1小格是1分,1分,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,一分钟能生产2台彩电,一分钟能生产 1600支铅笔,1,2,3,4,5,6,7,8,9,10,11,12,5分,1,2,3,4,5,
3、6,7,8,9,10,11,12,30分也可以说成半时,30分,5分,10分,15分,20分,25分,1,2,3,4,5,6,7,8,9,10,11,12,1,2,3,4,5,6,7,8,9,10,11,12,60分,1时=,=,分针走一圈,时针走一个大格。 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,分针走1小格是1分,30分也可以说成半时,15分也可以说成一刻,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,4时 5分,
4、4:05,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,4时30分或4时半,4:30,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,4时45分,4:45,总结规律:当时针走过数学4,分针从12起走了多少个小格,就是4时多少分。,做一做。,7:30,7:40,8:00,10:45,9:55,6:05,1:20,11,12,10,1,3,4,5,6,9,8,7,5,9时 5分,9:05,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,6时25分,6:25,9时15分 9:15,11时55分 11:55,认一认,9时30分,9:30,6时40分,6:40,8时35分,8:35,3,明明9:00做完作业后去踢球,10:30还要去看木偶剧,他可能在哪个时间去踢球?,A、7:45,B、9:15,C、10:50,( ),( ),( ),