为了弄懂小学数学算理的产生和发展,弄懂其全局和局部之间的内在联系,我们结合教学实践,编制出《小学数学算理体系示意图》(以下简称《示意图》),用以研究小学数学教学及其基础理论。一、小学数学算理同其他科学知识一样,产生于社会实践,又服务于社会实践。教材中的例题和练习题都以两种形式出现,一种是应用题,一种是式题。应用题产生算 In order to understand the emergence and development of mathematics in primary schools and to understand the internal relationship between the overall situation and the locality, we combined the teaching practice to compile the “Schematic Diagram of Primary Mathematical Calculation and Management System” (hereinafter referred to as the “Schematic Diagram”) for research purposes. Primary school mathematics teaching and its basic theory. First, mathematics in primary schools, like other scientific knowledge, originates in social practice and serves social practice. The examples and exercises in the textbooks appear in two forms. One is the application and the other is the question. Application problem calculation