《数学课程标准》指出:“数学教育不仅要考虑学生自身特点,更应遵循学生学习数学的心理规律,强调从学生已有的生活经验出发,让学生亲身经历,将实际问题抽象成数学模型并进行解释与应用的过程。进而使学生获得对数学理解的同时,在思维能力,情感态度等方面得 ”Mathematical Curriculum Standard“ states: ”Mathematics education should not only consider students' own characteristics, but also follow the psychological rules of students' learning mathematics. Emphasis should be put on students' existing life experiences so that students can experience them first and abstract practical problems into mathematical models And explain and apply the process.Then enable students to understand the mathematical at the same time, in thinking ability, emotional attitude, etc.