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教学变迁记:从黑板板书到多媒体课件,藏着高校教育的时代印记

  • 2026-05-08 07:47:40
教学变迁记:从黑板板书到多媒体课件,藏着高校教育的时代印记

说起大学里上课的方式,几十年来变化很大。从以前一块黑板、一支粉笔,到如今满屏投影、多媒体课件,课堂模样悄悄改变,也伴随着我国高等教育一路蓬勃发展。今天就和大家谈谈,高校多媒体教学一路走来的变迁故事。

一、八九十年代:小班授课,粉笔黑板相伴课堂

八九十年代高校每年招生数量基本稳定,增加不多。上课基本都是小班教学,大多一个班或两个班合堂上课,人数大多在30~90人,很少超过百人。

以我所在的单位为例,山东农大公共基础课一般是两个自然班,偶尔有三个自然班组成一个教学班合上,一个自然班30人,一个教学班通常60人左右,偶尔有90人;我在山师上学时,一个自然班45人,有些公共课会两班合堂上。过去大学的教室多是中小型教室,就算大的合堂教室,也只能容纳一百二三十人,极少超过二百人。那时候一支粉笔一块黑板,老师慢慢书写推演,学生静心听讲,课堂节奏舒缓扎实。

二、高校扩招,大合堂催生多媒体教学

中国多媒体教学的发展,始终和高等教育扩张同步前行。

1998年高校开始小幅扩招,1999年迎来大规模扩招,进入新世纪后连年扩招。在校学生数量激增,师资、教室全部紧张,各高校纷纷新建校区、扩建大教室。

以往小班模式无法继续延续,公共基础课全部改为大班合堂。像我们学校,数学课常常四个班合上,120多人,最多九个班合堂,学生多达两、三百人。新校区大教室能容纳三四百人,如同小型礼堂,第一排距离黑板就有七八米远。

传统黑板板书已经不再适用,字写大了,就写不了多少内容,字写小了,后排看不清。就这样,投影仪、多媒体大屏正式走进大学课堂。

当时的多媒体课件,其实就是教学幻灯片,简称PPT。它取自Office组件PowerPoint 的文件格式标识,被学生们戏称“骗骗他”。那时上课大多采用边讲、边播放PPT的方式,偶尔播放教学录像片,简单实用,基本解决了大班上课看不清、听不见的难题。

三、黑板与多媒体,各有长短

黑板教学和多媒体教学,没有优劣之分,只有适合与否,就好比放一只羊和放一群羊,要用不一样的放羊方法。

黑板教学尤其适合数学、物理、化学这类理科课程。小班人数少、课时充足时,老师一边手写推导、一边细致讲解,学生跟着思路逐步理解消化,学习效果扎实透彻。但短板很明显,无法适配大班大教室,而且如今课程课时大幅压缩,靠板书很难在规定时间讲完全部内容。

多媒体教学优势在于:受众范围广,几十人到几百人的课堂都适用,搭配音响投影,全场学生都能看清听清;课堂节奏更快,在课时紧张的当下,能够按要求完成教学任务。

更难得的是,多媒体课件方便教学经验传承。以前老教师精妙的课堂设计、解题思路、讲课技巧,只留在备课教案里,青年教师很难看到学到。如今优秀的课件能完整保留老教师教学设计与宝贵经验,方便年轻教师学习借鉴。

而且多媒体上课对青年教师特别友好。过去靠黑板上课,青年教师要是备课不充分,很容易讲着讲着卡壳,直接“挂在黑板上”,课都讲不下去了。现在有了课件,就算不是完全精通,也能照着课件把课顺下来,也就是有的学生说老师是“念PPT”,但至少能把一堂课完成,不会出现没法上课的情况。

当然,多媒体也有缺点,课件播放节奏快,学生少了跟着手写推演的详尽过程,感觉像在看一部节奏紧凑的电影。理解起来就会难一些,少了黑板教学那种沉浸式的互动感。

四、时代更迭,合适的教法就是最好的教法

黑板教学,是小班精细化教学,适合慢慢钻研、深度理解,适配精英教育;多媒体教学,是大班普及型授课、提升效率,匹配大众化教育。

不同时代有不同学情,不同办学条件,自然搭配不一样的教学方式。从粉笔黑板到荧屏课件,改变的只是教学工具,不变的是教师教书育人的初心。如今很多教师都会两者结合、取长补短,兼顾效率与理解,这就是高校教学最真实、最自然的发展历程。

时代不断向前,大学课堂教学也一直在变化。你更喜欢老师粉笔板书娓娓道来,还是PPT多媒体高效课堂?欢迎在评论区留言,聊聊难忘的校园课堂时光。

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  1. CONNECT:[ UseTime:0.000625s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000863s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000336s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000260s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000556s ]
  6. SELECT * FROM `set` [ RunTime:0.000202s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000584s ]
  8. SELECT * FROM `article` WHERE `id` = 501307 LIMIT 1 [ RunTime:0.001890s ]
  9. UPDATE `article` SET `lasttime` = 1778361246 WHERE `id` = 501307 [ RunTime:0.004788s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000431s ]
  11. SELECT * FROM `article` WHERE `id` < 501307 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.006163s ]
  12. SELECT * FROM `article` WHERE `id` > 501307 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.006560s ]
  13. SELECT * FROM `article` WHERE `id` < 501307 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000853s ]
  14. SELECT * FROM `article` WHERE `id` < 501307 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002520s ]
  15. SELECT * FROM `article` WHERE `id` < 501307 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001939s ]
0.101554s