一、加强两步应用题结构教学的必要性 从认知心理学的观点来看,小学生学习两步应用题的过程,也是认知结构的形成过程。而所谓形成认知结构,按照布鲁纳的说法,就是通晓学科中的基本概念和基本原理,理解学科中各部分知识之间的内在联系。然而,在传统的两步应用题教学中,没有正确揭示应用题的结构,往往是按运算加以不同的组合,按各种具体数量关系进行分类,举什么 First, to strengthen the two-step structure of the necessity of teaching questions from the cognitive psychology point of view, primary school students learn two-step application process, but also the formation of cognitive structure. The so-called the formation of cognitive structure, according to Bruner, is to understand the basic concepts in the discipline and the basic principles, understanding of the inner relationship between the various parts of knowledge in the discipline. However, in the traditional teaching of two-step applied questions, the structure of the applied question is not disclosed correctly, often different combinations of operations are used, and the classification is made according to various specific quantity relations and what are the