摘要
本文从教法的角度,拟就以数的扩展原则为依据,来阐述中学“有理数”的教材中,为什么要用“-”来表示负?加法和乘法法则为什么要那样定义?而在“复数”的教材中,为什么要用a+bi来表示任一复数?两个复数的相等为什么要那样定义?为什么任意二复数不规定它们的大小?等问题。
From teaching method and according to the principle of number of expansion, the paper expounds thaat why 'rational number' in the textbook uses'-'to denote negative; why the rule of addition and multiplication arc defined like that; why 'complex number' in the textbook uses atbi to denote any complex number; why two identical complex numbers are defined like that and why any two complex numbers are not stipulated which one greater or lesserin, etc.
出处
《曲靖师范学院学报》
1991年第1期20-25,共6页
Journal of Qujing Normal University
关键词
数的扩展原则
有理数
复数
rational number complex number princihlc of number of expansion.
