小学数学《义务教育课程标准实验教科书》(人教版)的编排特点之一是“知识由浅入深,要求逐步提高”。不是系统学习某个知识内容,而是将同一学习内容分成几个阶段进行教学,采取逐步渗透、进一步深化、螺旋上升的编排思想。比较有代表性的是关于分数的编排,教材将分数分为三个阶段进行编排。 Primary mathematics “compulsory education curriculum standard experimental textbook” (PEP) is one of the characteristics of orchestration “knowledge from shallow to deep, requiring gradual improvement ”. Rather than systematically learning a certain knowledge content, the same learning content is divided into several stages for teaching, and a step-by-step process of infiltration, deepening and spiraling arrangement is adopted. More representative is the arrangement of scores, teaching materials will be divided into three stages for the arrangement of scores.