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五四制说明.JPG

试用链接:

https://pan.baidu.com/s/11rQK7mArWBMdlaTehuKEXQ 

提取码:1234



五四制目录.JPG五四制目录2.JPG五四制课件展示1.jpg五四制青岛版课件演示2.png

部分教案展示


10000以内数的认识》参考教案

教材分析:

这幅情境图呈现的是人民大会堂的壮观场面,参观人民大会堂的万人礼堂、宴会厅的情境。借助不同场所提供的丰富信息,引导学生提出有关万以内数的认识的问题。

教学目标

1、认识计数单位“万”以及万以内数的读写。

2、培养学生观察、归纳、推理的能力。

3、通过用数来描述现象,进一步感受数学与日常生活的密切联系。

德育目标:

4、培养学生合作学习的策略。

课前准备:

计数器。

教学活动设计:

一、创设情境

1、同学们,来游览北京的同学,我们去人民大会堂参观啦!(出示情境图)

2、仔细看图,你都看到了什么?你能提出什么问题?

学生根据情境图的内容,可能说出人民大会堂的各层的座位,宴会厅可以容纳用餐的人数

二、新授

1、我们来解决怎样写出三三:(在计数器上拨出三三)

试着写出这个数[三]

请同学们联系上节课我们学习的知识,试着在练习本上写出这个数,谁想在黑板上写一写?

2、学习数的组成

(1)想一想:3693为什么要这样写呢?

(2)说一说:怎样在计数器上拨出3693呢?

(3)师小结:3693里面有几个百、几个十、几个一?

(4)思考:1500、3005和6050表示的意义是什么呢?

3、 认识计数单位万。

同学们提出了这么多的问题,我们先解决“一万是多少呢?”的问题好吗?

你认为一万是多少,谁来说一说?

学生可能说出:

一万就是10个一千。

一万就是100个百。

2个5000是一万,5个2000也是一万。

4、同学们都说得很好!下面请大家利用老师手中的一本1000页的辞典,先自己想象一下10000是多少,然后在小组内相互说一说,估计10000页有多厚。看哪个小组合作得好!

[一本辞典是1000页,10本这样的词典是一万页。]

5、然后请大家利用学具盒里的学具摆一摆、数一数。

6、小结:10个一千是一万,也可以说,一万里面有10个1000;千位左边的一位就是万位,万位上的一个珠子就表示1万。

三、巩固新知

1、3693大家会写了,一千五百、三千零五十和六千零五会不会写?如果不能直接写出,可以先在计数器上拨出来,然后再写。大家试着在练习纸上写一写,谁来黑板上写?

2、1500中的“1”“5”各表示多少呢?同桌相互说一说3050和6005的组成。

可以让学生在计数器上先试拨再说。

3、总结万以内数的读法法则。

从高位读起中间有一个或两个0都只读一个0

4、学生对“末尾的0不读”“中间的0只读一个”的概念了解得不够透彻,是否再出示一些相类似的题目,让学生的知识得到强化。

四、课堂小结

这节课你有哪些收获?


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