小学一年级钟表的认识.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,*,大家好,!,我是小孙悟空，我也是个爱学习的好孩子，可是,可小孙悟空还在呼呼大睡。,上课了,一（,6,）班,报告！,孙悟空上课总是迟到，你有什么好办法提醒他以后不会再迟到？,谜 语,一匹马儿两条腿，,日夜奔跑不怕累。,滴答滴答提醒你，,时间一定要珍惜。,（,打一生活用品,）,这都是小孙悟空收到的同学们送的礼物，想知道是什么礼物要先猜谜语。,认识时间,分针指着,12,，,时针指着几，就是几时。,12,7,8,9,10,11,1,2,3,4,5,6,复习,现在是几时？,4,时,4,00,你是怎样知道的？,认识时间,12,7,8,9,10,11,1,2,3,4,5,6,分针指着,6,，,时针走过几，就是几时半。,现在是几时？,你是怎样知道的？,8,时半,8,30,认识时间,复习,1,2,4,5,7,8,10,11,6,9,3,12,1,2,4,5,7,8,10,11,6,9,3,12,5,时,5,00,现在是几时？,5,时,10,分,想知道为什么是,5,时,10,分吗？,1,2,3,4,5,7,6,8,11,12,10,9,认真观察钟面除了有时针、分针和,12,个数字外，你还有什么发现？,钟面上一共有（）个大格，,12,每个大格里面有（）个小格，,5,钟面上一共有（）个小格。,60,认识时间,新知学习,11,12,10,1,2,3,4,5,6,9,8,7,认识时间,新知学习,11,12,10,1,2,3,4,5,6,9,8,7,1,分针走,1,小格就是,1,分。,认识时间,新知学习,11,12,10,1,2,3,4,5,6,9,8,7,5,分针走,1,大格就是,5,分。,认识时间,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,50,55,60,认识时间,11,12,10,1,2,3,4,5,6,9,8,7,认识时间,新知学习,11,12,10,1,2,3,4,5,6,9,8,7,时针走,1,大格就是,1,时。,认识时间,新知学习,11,12,10,1,2,3,4,5,6,9,8,7,5,认识时间,11,12,10,1,2,3,4,5,6,9,8,7,25,认识时间,11,12,10,1,2,3,4,5,6,9,8,7,40,认识时间,12,1,2,3,4,5,6,7,8,9,10,11,12,认识时间,仔细观察时针和分针,你又有什么发现？,新知学习,1,2,3,4,5,6,7,8,9,10,11,12,时针走一个大格,时,60,分,=,分针走了一圈,认识时间,新知学习,2,时,55,分,2:55,分针指着（），就是（）分。,时针指过（），就是（）时多。,合起来就是（）时（）分。,11,55,2,2,2,55,认识时间,新知学习,9,时,5,分,9:05,分针指着（），就是（）分。,1,5,时针指过（），就是（）时多。,9,9,合起来就是（）时（）分。,9,5,认识时间,读一读,6,时,25,分,6:25,认识时间,读一读,12,时,45,分,12:45,认识时间,读一读,1:10,11:15,4:20,5:35,认识时间,连一连,谁最棒？,认识时间,12,1,2,3,4,5,6,7,8,9,10,11,5,时,25,分,5,25,认识时间,认一认,12,1,2,3,4,5,6,7,8,9,10,11,1,35,1,时,35,分,认识时间,认一认,12,1,2,3,4,5,6,7,8,9,10,11,10,时,15,分,10 15,：,认识时间,认一认,12,1,2,3,4,5,6,7,8,9,10,11,4,时,4 00,：,认识时间,认一认,12,1,2,3,4,5,6,7,8,9,10,11,6,时,5,分,6 05,：,认识时间,认一认,12,1,2,3,4,5,6,7,8,9,10,11,8,时,55,分,8 55,：,认一认,认识时间,12,1,2,3,4,5,6,7,8,9,10,11,10,45,认一认,认识时间,10,时,45,分,10,时,15,分,10,15,认一认,认识时间,你能在你的钟面上拨出下面这些时刻吗？,2,25,12,时,55,分,6,35,3,20,11,05,练一练,拓展练习,判断：,对的在括号里画“,”,错误的画,“,”,1,、分针走一圈，经过的时间是,60,分。（）,2,、时针走一圈，经过的时间是,12,时 （）,3,、分针从钟面上的一个数字走到下一个数字，经过时间是,5,分。（）,4,、钟面上的时刻是,6,时，这时分针和时针在一条直线上。（）,拓展练习,你知道吗？,现在是,5,时,35,分,过,5,分是,5,时,40,分,现在是,4,时,20,分,过,10,分是,4,时,30,分,拓展练习,你会比大小吗？,1,时,55,分,1,时,40,分,100,分,50,分,1,时,=,认识时间,11,12,10,1,2,3,4,5,6,9,8,7,11,12,10,1,2,3,4,5,6,9,8,7,11,12,10,1,2,3,4,5,6,9,8,7,11,12,10,1,2,3,4,5,6,9,8,7,认识时间,拓展练习,世界上最宝贵的是时间,同学们一定要珍惜时间,!,再见,大约,8,时,大约,8,时,大约,9,时,大约,5,时,12,1,2,3,4,5,6,7,8,9,10,11,现在是（）,过,5,分是,10,时,15,分,世界上最宝贵的是时间,同学们一定要珍惜时间,!,再见,世界上最宝贵的是时间,同学们一定要珍惜时间,!,再见,12,1,2,3,4,5,6,7,8,9,10,11,1,：,35,1,时,35,分,12,1,2,3,4,5,6,7,8,9,10,11,10,时,45,分,10,45,12,1,2,3,4,5,6,7,8,9,10,11,7,时,52,分,12,1,2,3,4,5,6,7,8,9,10,11,9,时,17,分,12,1,2,3,4,5,6,7,8,9,10,11,4,时,4 00,：,12,1,2,3,4,5,6,7,8,9,10,11,1,时,08,分,1 08,：,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,47,分,4 47,：,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,：,世界上最宝贵的是时间,同学们一定要珍惜时间,!,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,50,55,60,再见,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,50,55,60,认真观察钟面你有什么发 现？,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，,12,每个大格里面有（）个小格。,5,钟面上一共有（）个小格，,60,学习新知,1,2,3,4,5,7,6,8,11,12,10,9,5,10,25,30,20,15,60,35,40,45,50,55,学习新知,1,2,3,4,5,7,6,8,11,12,10,9,5,10,认真观察钟面你有什么发现？,学习新知,1,2,3,4,5,7,6,8,11,12,10,9,5,10,25,30,20,15,60,35,40,45,50,55,学习新知,认真观察钟面你有什么发现？,1,2,3,4,5,7,6,8,11,12,10,9,学习新知,认真观察钟面除了有时针、分针和,12,个数字外，你还有什么发现？,认识时间,11,12,10,1,2,3,4,5,6,9,8,7,5,10,15,20,25,30,35,40,45,50,55,60,认真观察钟面你有什么发 现？,认识时间,1045,12,1,2,3,4,5,6,7,8,9,10,11,7,55,7,时,55,分,认识时间,