小学数学人教三年级认识时分秒.ppt

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.秒的认识,甘棠镇新禧小学 贺小苹,填一填,钟面上有,个大,格,，,个小格。,时针走个大格是,分针走个小格是,时针走个大格，分针正好走,走大格是,时,。,分,，,圈,，,分,。,是,分。,1,时,=60,分,12,60,1,1,5,1,60,12,1,2,3,4,5,6,7,8,9,10,11,1,时,1 00,：,12,1,2,3,4,5,6,7,8,9,10,11,4,时,4 00,：,12,1,2,3,4,5,6,7,8,9,10,11,6,时,6 00,：,12,1,2,3,4,5,6,7,8,9,10,11,9,时,9 00,：,12,1,2,3,4,5,6,7,8,9,10,11,10,时,15,分,10 15,：,12,1,2,3,4,5,6,7,8,9,10,11,4,时,45,分,4 45,：,12,1,2,3,4,5,6,7,8,9,10,11,6,时,5,分,6 05,：,12,1,2,3,4,5,6,7,8,9,10,11,8,时,55,分,8 55,：,12,1,2,3,4,5,6,7,8,9,10,11,10时15分,10 15,：,12,1,2,3,4,5,6,7,8,9,10,11,4时45分,4 45,：,12,1,2,3,4,5,6,7,8,9,10,11,6时5分,6 05,：,12,1,2,3,4,5,6,7,8,9,10,11,8时55分,8 55,：,12,1,2,3,4,5,6,7,8,9,10,11,9时18分,9:18,填空,1,时,=,1,时,30,分,=,1,时,10,分,=,80,分,=,分,分,分,分,时,20,70,60,1,90,再见 谢谢,