学生是学习的主体，教师的“教”是为学生的“学”服务的。教师在教学中既要发挥其主导作用，更要发挥学生的主体作用。笔者曾对数学学得较差的学生作了分析，发现这类学生学得差其原因有四：一是数学基础知识差；二是学习态度差；三是学习方法差；四是学习环境差。同时也发现? Students are the main body of learning. The teacher’s “teaching” serves the student’s “learning”. Teachers should not only play their leading role in teaching, but also give full play to the main role of students. The author once analyzed the poor students of mathematics and found that there are four reasons why such students are poorly taught. One is the poor basic knowledge of mathematics; the second is poor learning attitude; the third is poor learning methods; and the fourth is poor learning environment. . Also found?