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    为什么那么多学生讨厌数学?那是因为读小学时用了错误的方法!

    为什么那么多学生讨厌数学?那是因为读小学时用了错误的方法!


    来源:学习力教育中心  文章作者:佚名

     

      相当多的学生从小学开始就讨厌数学,进入中学后,更是看到数学就头痛。下面就来看看一位学霸的分析,会让家长朋友真正认识到自己的孩子为什么为讨厌数学。

      在加州大学伯克利读书时,我学的是统计学,后来在硅谷做过数学老师,从简单计算到代数到几何,一直到微积分,都曾涉猎过。所以,很多父母特别是华人父母经常和我交流孩子的数学教育问题。

      总体来说,家长们有三大焦虑:

      

      孩子算数很慢,会不会限制孩子的数学发展?

      如何引导孩子对数学产生兴趣?

      如何提高数学能力?

      今天,我就把我的实践经验以及所思所想,分享给各位。

      ▋全球最牛的统计系里,学生随身携带计算器

      “孩子算数很慢,会不会限制孩子的数学发展?如何提高呢?”这是我被问得最多的问题。不少朋友可能被某些原因错误引导,认为数学能力就是快速计算且计算正确的能力、快速解答应用题的能力,以及快速解决数学谜题的能力,其实这跟真正的数学之间还有不小的差距。

      下面这个场景大家应该不陌生——每个人一张口算纸,六十道题,比比谁计算得更快。算完的同学要举手示意,他将获得老师的表扬——这是我小时候最害怕的数学课环节。每次我的同桌举手,我都会心急如焚,然后抱怨自己为什么算得这么慢,接下来就是脑子里一团乱麻,有种想放弃的冲动,胡乱地填几个答案,也不管它正确与否。据说这个场景,现在很多孩子还在面对。

      后来上了大学,每次AA制吃饭结账的时候,朋友都会让我来计算每人应该花多少钱。大家认为我是学数学的,应该非常擅长心算才对,但这个时候,我都会主动投降,因为我确实不擅长心算。我会掏出计算器,直接按一按。

      原本我以为,只有我在计算方面比较异类。但是我读大学的时候,发现周围的很多学霸,也都不太擅长心算。不管是什么时候,大家都会掏出计算器。工作的时候,周围也几乎没有人心算,都是借助电脑或计算器来计算。

      听起来我像是在找借口,其实,很多极为优秀的数学家、科学家也不擅长计算,并且这个人数不在少数。举一个我最近看到的例子。华裔数学家丘成桐教授做客央视的演讲节目《开讲啦》,被现场一名学生一个关于计算的问题给问倒了,丘教授就直言不讳说,他确实不擅长计算。在数学界,有些定理要经过几百年漫长光阴才能被证明出来,期间有无数数学家终其一生都在研究某一个定理,少数人到最后如愿以偿地解开了谜团,扬名立万,并不是因为他们能快速找到答案,而是因为他们有绝不放弃的执着。

      ▋数学又不是换轮胎,要那么快干嘛

      是,孩子的心算能力是非常重要,但通过训练提高孩子计算速度,并不意味着孩子的数学就非常好,这就好比一个修车厂的工人,他换轮胎的速度,不知道比我们快多少倍,但他会因此骄傲吗?

      追求计算速度,只要接触的题型多,懂得分门别类,套用既定的方法,就可以快速找到答案,但这是电脑最擅长的事情。所以,拥有快速计算这一能力的人,在进入社会之后,他并不会像学生时期那样,受到那么多的肯定。原因很简单——人类所具备的能力,是那些对未知问题提出思考解答,即使无法找到答案,也能想出各种解决方法的能力。这才是一种真正的数学能力。

      那么,数学能力到底是什么呢?在拉丁文中,“数学”代表“思考”,学习数学的核心目的,是培养一个人的思考能力。我们经常听到说“数学是一个工具”,很多人误把这句话理解为“数学是一个计算的工具”,其实,数学远远不止这么小,她不但是科学之母,还是一切学科的基础,存在于生活的各个领域。

      所以,只要你的孩子有好奇心,喜欢不断去思考,即使算数速度比较慢,也不会限制孩子数学能力的发展。但是根据我的观察,以及我和父母的交流,我会发现,现在的父母和老师可能会一味追求孩子的计算速度,这导致孩子越来越不习惯去思考,这是一件非常严重的事情。比起快速给出答案,深思熟虑更加值得我们鼓励与肯定。

      总结一下,能够快速计算、能够按照某种题型解答应用题和擅长解答数学谜题,这些都是“算术能力”,并非“数学能力”——这里要明确区分一下概念——数学和算术,其实是两种貌同实异的学问。直接一点来说就是,算术是一门磨练你如何正确并且快速解答已知问题的科目,而数学则是一门培养你解决未知问题能力的科目。

    |<< << < 1 2 > >> >>|


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    ·下一篇文章:教育部所要求的“研学旅行课程化”,到底难在哪?


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