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Subject: 【主題文章—數學想想】什麼是水的容量◎史英


Author:
傲笑紅塵
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Date Posted: 03:39:46 05/03/02 Fri

主題文章—數學想想

什麼是水的容量
◎史英


 有人問我:某本教科書上寫「水的多少叫做水的容量,可以先把水裝到底部平放的量杯裡,再看水面高度到哪裡的方法來量水的容量」,這個說法有無問題,小朋友可以理解嗎?

 初聽之下,我吃了一驚,因為水無法容(不是溶)得下任何東西,它理當沒有「容」量;看起來,應該是「杯子的容量」才對。如果那本書上真的寫出「水的容量」,那就不止是小朋友不能理解,任何正常使用中文的人都無法理解;如果有人宣稱他理解了,他就是「連理解」都不理解;至於寫書的人呢?我懷疑,那就是連不理解都不理解,或連不理解都居然理解了。

 為什麼放著現成的「體積」兩個字不用呢?我猜,也許是擔心「小孩不易理解」;然而,「身體」、「物體」都是成用的語詞,只要再解釋一下「積」就是能夠看到、摸到的「累積」的大小,應該也比什麼「容量」清楚得多吧?

 為什麼呢?因為「量」字,一般僅指「多寡」;果然,又有人問:為什麼飲料罐上標示的容量,有的卻是公克呢?其實廠商的用法,只是反應日常用語而已。所以在教學的時候,關於水的多少,應該同時提出重量和體積兩種量法,讓小孩比較;理解或認識的根源,就在對比;我們是因為分辨了事物的異同,才認識了事物;說是認得媽媽的臉,不就意味著知道那不是別人的臉嗎?

 如果認真的教「量」的方法,就不必避諱體積和重量這種詞語,而故意弄出一個不通的「水的容量」出來。不過話又說回來了,曾有一種課本上某一章的標題竟然是「那裡有長?」(意思是長度要量哪裡),試問有誰看得懂呢?

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Replies:
Subject Author Date
Re: 應該問問阿彪叫獸..^^"寶貝華華09:17:00 05/03/02 Fri
史英這個所謂的專家,就會鑽牛角尖,難怪他所主持新的教育改革,改得小學生們連最簡單的加減乘除都得靠計算機一群可憐小學生的傷腦筋老爸09:46:53 05/03/02 Fri
Re: 專家 與 專家鴨鴨22:23:24 05/03/02 Fri


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