在新课程改革的今天,课堂教学仍是素质教育的主阵地。如何在45分钟内有效地组织好课堂教学,为学生创设一个轻松愉快的学习环境,充分发挥学生的主体性,提高数学课堂教学的有效性,是所有教师探索的一个关键问题。笔者经过几年来的实践,现提出 In the new curriculum reform, classroom teaching is still the main front of quality education. How to effectively organize classroom teaching within 45 minutes, create a relaxed and happy learning environment for students, give full play to students’ subjectivity and improve the effectiveness of classroom teaching in mathematics are all key issues explored by all teachers. After several years of practice, the author is now proposed