国家基础教育课程改革《数学课程标准》指出 :数学教学应从学生实际出发 ,创设有助于学生自主学习的问题情境 ,引导学生通过实践、思考、探索、交流、获得知识 ,形成技能 ,发展思维 ,学会学习 ;促使学生在教师指导下生动活泼地、主动地、富有个性地学习。在传统教学中 ,学生总 The National Basic Education Curriculum Reform “Mathematics Curriculum Standards” points out that mathematics teaching should start from the students’ actual conditions, create problem situations that help students learn independently, and guide students through practice, thinking, exploration, communication, and knowledge acquisition to form skills and develop thinking. Learn to study; prompt students to learn actively, proactively, and individually under the guidance of a teacher. In traditional teaching, the total number of students