一、问题的提出在传统的习题教学中,教师比较注重以“知识提要介绍→例题分析讲解→课外巩固练习”流程为特征的模仿巩固教学模式.然而,这种习题教学模式存在如下弊端:(1)虽然根据教学要求预设课堂教学的知识结构和例题系统,但这些预设往往是从知识、问题 First, the problem raised In the traditional exercises teaching, teachers pay more attention to “knowledge summary → analysis of examples to explain → extracurricular consolidation exercises ” process characterized by imitation to consolidate the teaching mode However, this problem-based teaching model has the following drawbacks : (1) Although the teaching structure and sample system of classroom teaching are preset according to the instructional requirements, these preconditions are usually from knowledge, problem