徐芳（秒的认识）.ppt

第一单元,时,分,秒,阳逻街四小徐芳,第一单元,时,分,秒,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,小知识：秒针走一小格的时间就是1秒。,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,1,12,2,3,4,5,6,7,8,9,10,11,快乐小时钟,1,12,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,1,12,2,3,4,5,6,7,8,9,10,11,快乐小时钟,1,12,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,BACK,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,1,2,12,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,1,12,2,3,4,5,6,7,8,9,10,11,快乐小时钟,1,12,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,12,1,2,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,2,12,1,3,4,5,6,7,8,9,10,11,快乐小时钟,BACK,我们发现了,秒针走了一圈的同时，,分针走一小格是钟。,1分,分针正好走了一小格。,1分,60秒,60秒,秒针走一圈是，,小测试,给你一分钟，可以写一段话；可以做算术题；也可以画一幅画等等。请你选择一项完成，看看自己能够做多少。,12,1,2,3,4,5,6,7,8,9,10,11,BACK,快乐小时钟,1,2,3,4,5,6,7,8,9,10,11,12,BACK,快乐小时钟,1秒的价值,猎豹,陆地上的跑步冠军，它最快时每秒约跑30米,1秒的价值,飞机,每秒约行250米,1秒的价值,造纸厂,每秒生产的纸可以装订成500多本作业本,1秒的价值,电脑,一秒钟可以完成约3万亿次运算,练习一,a、我们每天的睡眠时间应达到9（）。b、小红系红领巾大约只需要20（）。c、明明吃早饭大约要15（）。d、我们上一节课的时间是40（）。e、小林做一道口算题大约用了4（）。,在括号里填上时间单位。,小时,秒,分,分,秒,40分钟,早上,我起床，花了洗脸刷牙，吃早饭用了，上学的路上遇到红灯停了，走了到了学校，见了同学说一句“早上好”只需。上第一节课，用了。,40秒,2秒,8分钟,25秒,10分钟,5分钟,小明的日记,7时,5秒钟,10小时,25分钟,8秒,2分钟,练习二,练习二,名言,时间就是生命，时间就是速度，时间就是力量！,00:30,00:29,00: