长期以来,小学数学教学以集中思维为主要思维方式,课本上的题目和材料的呈现过程大都循着一个模式,学生习惯于按照书上写的与教师教的方式去思考问题,用符合常规的思路和方法解决问题,这对于基础知识、基本技能的掌握是必要的,但对于小学生学习数学兴趣的激发、智力能力的发展,特别 For a long time, primary school mathematics teaching has focused on thinking as the main way of thinking. Most of the problems on the textbooks and material presentation follows a pattern. Students are accustomed to thinking about problems according to the way they are written and teachers teach them. Ideas and methods to solve the problem, which is essential for the mastery of basic knowledge, basic skills, but for primary school students to stimulate interest in learning mathematics, intellectual development, especially