2022年冀教版数学三上《八、吨的认识》word教案 .pdf

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1、名师精编优秀教案吨的认识教学目标：1结合具体事例，经历、感受认识吨的过程。2认识质量单位“吨”，知道 1吨=1000 千克。3.能正确换算质量单位，感受“吨”在日常生活中的应用，增强数学的应用意识。教学重点：认识质量单位“吨”，知道 1 吨=1000 千克。教学内容：冀教版数学三年级上册第八单元“吨的认识”第一课时。教学过程：一、谈话引入师：同学们，上节课老师留给你们分组调查各组同学的体重，你们完成了吗？下面请各小组汇报一下你们调查的结果吧。（各小组汇报）二、教学“吨”1 认识吨师：老师看到同学们调查的结果，想到了一个问题，你们能不能帮老师解决一下呢？好，我们每个同学的体重都知道了，每个小组同

2、学一共的体重也知道了，那我们全班同学的体重一共是多少千克呢？生：说解决办法，并用自己的方法算一算。师：好了已经有几组做完了，哪一小组愿意给大家说说你们的结果？（交流展示学生答案）师：这一组的同学计算的结果是多少千克？再看另几组的结果。师：你们真聪明，计算的又快又准确，真不错。师：刚才我们计算了全班同学的体重是多少千克？生：大约1000 千克。师：非常正确。师板书：1000 千克（“千克“用红色笔强调。）名师精编优秀教案师：其实 1000 千克还可以用一个新的质量单位“吨”来表示，（板书吨）1000 千克也叫 1 吨，1 吨=1000 千克，（板书 1 吨=1000 千克）跟老师一起读一读，1

3、吨等于 1000 千克。师：“吨”可以用一个字母“t”来表示，所以也可以这样写。师板书：1t=1000kg 2 感知“吨”师：大家想一想我们全班同学的总体重如果用“吨”做单位怎样说呢？生：大约是1 吨师：说的非常好，那 1 吨到底有多重呢？下面我们先来进行一个小活动，体验一下，谁愿意参加？（请几位同学到前边背一名体重在33 千克左右的同学并说说感受。）师：下面我们就请这三名同学来背一背这名体重是33 千克的同学，谁第一个来。（生活动）师问：感觉怎么样？生：感觉很重。师：刚才这三名同学背的只是一名33 千克的同学，像这样的同学要有多少名，体重大约才是1 吨呢（30 名），三十名如果都让你背怎么样

4、？再看一桶矿泉水，谁能抱的起来，抱起来时感觉怎么样，如果一桶矿泉水重20 千克，大家推算一下多少桶水才是一吨呢（50 桶）？同学们非常聪明，大家可以体会一下。我们接着看，这只动物见过吗？（出示一头犀牛的课件）个头大不大？你知道吗，1 头犀牛大约就重1 吨。师：看来“吨”是比“千克”大的多的质量单位，所以在计量较重或大宗物品的质量时，通常要用“吨”做单位。比如；一列火车，有这么多节车厢，每节车厢就可以装下50 吨货物，再看，（出示轮船图片课件）这艘轮船它能装六千多吨货物呢。这个，（出示坦克图片课件）它的重量超过了30 吨。还有呢？（出示蓝鲸的图片课件）谁知道有关蓝鲸的知识？师：你知道的真多，蓝鲸

5、很大，一条成年的蓝鲸体重能超过150 吨。同学们，你们还知道哪些有关吨的知识，可以和你周围的同学互相说说。师：的确吨在生活中的应用很广泛，除了同学们刚才说的，还有我们运煤、运沙、运水泥等等，就连我们生活中计量用水也用“吨”做单位。另外还有一些这样的标志，请看，（出示课间）谁知道这座桥边的标志是什么意思？(生回答)师：有不同意见吗？文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7

6、Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C

7、7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7

8、Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10

9、K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V

10、4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1

11、N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ

12、10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9名师精编优秀教案师：再看，这辆汽车上的“载重6 吨”呢？（生：这辆汽车最多能装6 吨的货物。）师：同学们真了不起，知道的这么多。三、巩固练习师：今天我们学习了有关“吨”的知识，接下来我们就利用刚学到的这些知识一起到趣味乐园去看看好吗？1 图画里的数学师：一天，大森林要召开大会，动物们都来参加，路上几只动物不约而同走到了一块，这时他们遇到一个问题，我们一起去看看？（出示）师：哪几只动物可以一起通过呢？可以先和你周围的同学说说师：谁来说一说？师：有没有三只动物可以通过？师：同学们真了不起想出了这么多方案，在同学们的帮助下，动物们都

13、安全的通过了这座桥。2 快乐判断师：下面凭你的生活经验判断一下，哪些比1 吨重，哪些比1 吨轻。如果比一吨重你就打对的手势，如果比一吨轻你就打错的手势，好吗？学生练习。四、小结 1 通过这节课的学习你懂得了什么？2 生活中处处有数学，解决生活中的问题也会经常用到数学知识。文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9

14、文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5

15、P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J

16、1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2

17、T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7

18、Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C

19、7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7

20、Z2T9名师精编优秀教案文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文

21、档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P

22、3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1

23、P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T

24、9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z

25、5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9文档编码:CJ10K7Z5P3I8 HC1V4C7J1P3 ZI2M1N7Z2T9