心算

心算


18 May 2022. 炎热。


一位17岁华中女孩,破了3项星国心算乘法的记录: 2x1 位数(分钟答对256题);平方(5分钟答对74题)答对Sporkle 100题乘法(4分钟3秒)。比计算机快,不愧小时神童的称号  


她从小就对算盘情有独钟。


四岁就学珠算,用算盘帮助记忆数字;很快的就可以用脑想象自己或别人在用手拨算盘;再然后这算盘珠子就会在脑海里自己拨动。


十岁时因为肺炎入院,手因插上针不能提笔,闲着无聊就锻炼心算。这变相的增强她心算的能力。


想起送孩子们学珠算和心算旁听时,也觉得这算盘和心算法简单有效。


所以会把这小小算盘收藏至今,聊表聪慧的古人敬意。


当然有空时也该练练来预防老人痴呆症,哈哈哈。




Comments

qi said…
Hahaha I don't think I remember how to do this anymore
wennho said…
Wahhh this brings back memories. I still remember my abacus classes in kindergarten.
I think abacus is not as efficient for mental math though, since you have to remember the position of the 5-beads, in addition to the 1-beads. But probably better for kids since it helps with visualization.

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