解题是理解、巩固、深化数学知识必不可少的一个重要环节,是了解学生学习状况的一个窗口,是数学教学的有机组成部分,是掌握基础知识、基本技能和发展能力的一条重要途径,是学习数学的必要条件。恩格斯说:一个民族要想站在科学文化最高峰,一刻也不能离开理论思维。著名心理学家 Problem solving is an important part of understanding, consolidating and deepening mathematical knowledge. It is a window to understand the learning situation of students, an integral part of mathematics teaching, an important way to master basic knowledge, basic skills and developing abilities. Is a necessary condition for learning mathematics. Engels said: If a nation wants to stand at the peak of science and culture, it can not leave its theoretical thinking for the moment. Famous psychologist