【文档说明】北师大版一年级数学上册《小明的一天》PPT课件(5篇).pptx，共(82)页，11.585 MB，由小橙橙上传

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认识钟表一年级数学·上新课标[北师]第8单元小明的一天会走没有腿，会说没有嘴，它会告诉你，什么时候起，什么时候睡。（打一生活用品）猜谜游戏知识点1认识钟面短又粗的是时针细又长的是分针最细最长是秒针数格针圆1263912457810111~12个数12大格60小格

知识点2认读整时①分针指向12是整时②时针指向7表示7整时①分针指向12是整时②时针指向8表示8整时时针和分针都指向12表示12整时①分针指向12是整时②时针指向4表示4整时知识点3认读半时①分针指向6是半时②时针指向9和10的中间是9时半①分针指向6是半时②时针指向8和9的中

间是8时半知识点4整时、半时的应用①时针指向5和6之间②分针指向66时半起床①分针指向12②时针指向99时睡觉整时分针指向“12”，时针指向几就是几时。半时分针指向“6”，时针在两个数的中间，刚走过几时就是几时半。钟表的由来古时的人们知道用日日夜夜来表示时间，可是太粗略了，后来人们

就用太阳的影子来确定时间，即开始是用影钟来测定时间，可因为影钟很难看出具体是什么时间，于是聪明的古人又应用日晷来确定时间，但是当云遮住了太阳的光线时就不能用了，后来人类又发明了铜壶滴漏，这比用日晷来确定时间更准确，人们就开

始用铜壶滴漏，可是这又太难用了，再后来，人们发明了钟表，计时就越来越准确了。认识钟表小明的一天课堂导入-新知探究-课堂练习-课堂小结-课堂作业1.了解钟表的结构，知道钟面上的短针叫时针、长针叫分针。2.结合生

活经验，学会看钟表上的整时和半时，会准确的读出整时和半时。3.培养初步的观察、分析、推理能力。【重难点】正确读写钟表上的整时和半时。滴嗒滴嗒，滴嗒滴嗒,当当当，会走没有腿，会说没有嘴，它会告诉我们，什么时候起，什么时候睡。钟表猜一猜让我们来认识一下钟表。又细又长的是分针又粗又短的是时针有12个数，

12个大格，每一大格中有5个小格。整时：分针指向12，时针指向几就是几时。7时分针指向12，时针指向7，就是7时。8时分针指向12，时针指向8，就是8时。整时的电子表示方法：1212345678910111212345678910117时7:009时9:00半时：分针指向6，时针走过几就是几

时半。9时半分针指向6，时针走过9，在9和10中间，就是9时半。8时半分针指向6，时针走过8，在8和9的中间，就是8时半。半时的电子表示方法：9时半9:308时半8:30也可记作：7:00也可记作：8:00说一说。认一认。也可记作：9:30也可记作：12:00也

可记作：4:00也可记作：8:30整时半时1、连一连。5时3时1时2、认一认。3时半8时半10时半3、拨一拨。5时半10时12时1212345678910111212345678910111212345678910111、认识了钟面，以及分针和时针。2、能够读出钟表

上的整时和半时。3、整时：分针指向12，时针指向几就是几时。半时：分针指向6，时针走过几就是几时半。1．认一认。3时半6时半5时3时2．连一连。3．根据下面的影子，选择大约的时间，连一连。小明的一天北师大版小学数学一年级P

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7时知识讲解8时知识讲解9时半知识讲解12时知识讲解4时知识讲解8时半知识讲解知识讲解我说你拨。6时半起床。9时睡觉。练习巩固认一认。练习巩固连一连。练习巩固该起床了。127891011123456练习巩固127891011123456该上学了。我还没吃完饭呢

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