2010年12月17日 星期五

日本人這樣計乘數

6 則留言:

  1. 又是建構式數學。有次在高登看到有人 post ,竟然有人不明白,我對那些不明白的人的評價是讀死書。台灣教改在推行,但又一堆教師和家長知其然而不知其所以然,死得。

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  2. 費時失事, 愚蠢的計算方法.

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  3. With training, people with talent in visual thinking can calculate quick with this method.

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  4. Think about, for example, calculating 89 x 57 with this method. This may be better for learning the concept but eventually we still need the "textbook" methods.

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  5. Impressive demonstration but what about division and taking roots?

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  6. Sorry, this method is only for multiplication. For other operations, I guess you will have to ask the Japanese? =)

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