初中阶段学生数学学习成绩两极分化呈现出比小学阶段更严重的趋势,这种状况直接影响着大面积提高数学教学质量。那么,造成两极分化比较严重的原因是什么?如何预防严重分化? The polarization of students’ mathematics achievement in junior high school shows a more serious trend than that in elementary school, which directly affects the quality of mathematics teaching in a large area. What is the reason for the serious polarization? How to prevent serious differentiation?