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人教版小学数学二年级上,认识时间,执教人 廖奇敏,3时,300,复习,1,上课。,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,=,分针走一圈,时针走一个大格。1时=60分,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,4:05,11,12,10,1,3,4,5,6,9,8,7,2,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,我来闯关,1、课本91页做一做请用电子表示法写出时间2、把做一做的各个时间自己动手拨一拨,应用拓展,巩固新知,做一做。,问题:你能准确写出每个钟表所表示的时间吗?,7:30,7:40,8:00,10:45,9:55,6:05,1:20,说一说,本节课你知道了什么?,一寸光阴一寸金,寸金难买寸光阴。,