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试讲 | 高中信息技术《网络的软件》教案

  • 2026-10-28 16:59:01
试讲 | 高中信息技术《网络的软件》教案

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01

试讲教案

一、教学目标

1.学生能够准确说出网络软件的分类及其特点,区分出C/S和B/S结构的不同。

2.通过自主探究和合作学习的方法,提高归纳概括能力,概括出C/S和B/S结构的优缺点。

3.体会信息技术给我们的学习、生活带来的方便。

二、教学重难点

【重点】网络软件的分类及网络应用软件的结构。

【难点】B/S和C/S结构的区别。

三、教学过程

(一)导入新课

教师引导学生回忆,计算机的组成部分是哪些,学生可能回答计算机由硬件和软件组成。根据学生的回答进行追问,只有硬件没有软件的计算机能否工作?预设学生都可以回答不能。教师可以评价学生所学知识掌握扎实。教师引出:网络和计算机一样,仅靠硬件,网络还是无法工作的,它也需要一些相应软件的支持。本课围绕网络的软件展开。

(二)新课讲授

1.网络软件分类

教师抛出疑问:电脑中的操作系统Windows7或者Windows8,还有经常用来聊天的软件,比如微信或者QQ,是不是属于计算机软件的范围呢?如果是的话,那么Windows7与QQ是否可以归为同一类呢?预设学生给出答案。【不能,Windows7属于系统,QQ属于软件】教师可以点评学生回答准确并进行解释网络中软件包括网络操作系统和应用软件。就像Windows7就属于网络操作系统,而QQ就属于应用软件。教师多媒体展示例子请学生判断分类:比如网络操作系统的Windows  NT、Windows  2000、NovellNetware、Unix和Linux等。应用软件生活中的应用比如经常会用到的压缩软件、播放软件,还有聊天软件等等。

2.C/S与B/S结构

教师提出疑问:电脑登陆QQ除了下载QQ软件之外是否还有其他方法。【有,登陆网页版QQ】教师点评学生思维广泛。之后向学生介绍网络应用软件有两种结构,分别是B/S和C/S结构。网页版QQ登陆就属于B/S模式,QQ软件登陆就属于C/S模式,然后提问B/S与C/S的区别在哪呢?教师组织学生以小组为单位限时5分钟讨论。然后请小组代表回答。【B/S不需要安装客户端软件,客户端只能完成简单功能,绝大部分工作由服务器承担,对客户端的操作系统没有要求,适合广域网】另一小组补充【C/S需要安装客户端软件,对客户机要求较高,响应快,适合局域网。】教师进行适当点评后归纳:B/S、C/S结构各有其优点与缺点,要根据运用场合、涉及到的数据处理量、对客户端的要求等情况考虑,选择合适的网络应用软件结构。

(三)巩固提高

教师出示2道判断题在PPT上,学生判断出正误。

1.Windows XP、Windows10不属于网络操作系统。(错)

2.B/S不需要安装客户端软件,适合广域网。(错)

(四)小结作业

小结:教师提问C/S与B/S的不同,学生说出B/S不需要安装客户端软件,客户端只能完成简单功能等。

作业:参观学校各种网络设备,通过观察以及请教老师,思考问题:学校使用了几台服务器,每台服务器上安装了哪些服务器软件,这些软件的作用是什么?以填写表格的形式记录。

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  1. CONNECT:[ UseTime:0.000712s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000991s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000567s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000380s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000608s ]
  6. SELECT * FROM `set` [ RunTime:0.000318s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000712s ]
  8. SELECT * FROM `article` WHERE `id` = 458903 LIMIT 1 [ RunTime:0.000437s ]
  9. UPDATE `article` SET `lasttime` = 1794175822 WHERE `id` = 458903 [ RunTime:0.001533s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000325s ]
  11. SELECT * FROM `article` WHERE `id` < 458903 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000567s ]
  12. SELECT * FROM `article` WHERE `id` > 458903 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000378s ]
  13. SELECT * FROM `article` WHERE `id` < 458903 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000595s ]
  14. SELECT * FROM `article` WHERE `id` < 458903 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000503s ]
  15. SELECT * FROM `article` WHERE `id` < 458903 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000605s ]
0.088860s