教学情境是课堂教学的基本要素,创设教学情境是教师的一项常规教学工作,创设有价值的教学情境更是教学改革的重要追求。《数学课程标准》(2011年版)在第四部分“实施建议”中指出:“教学中应从学生实际出发,创设有助于学生自主学习的问题情境。”郑毓信教授说:“好的数学情境,应该满足一个基本的要求:就相关内容而言,特定情境的设置不应该仅仅起到一个敲门砖的作用,也不仅仅有 Teaching situations are the basic elements of classroom teaching. Creating teaching situations is a regular teaching task for teachers. Creating valuable teaching situations is an important pursuit of teaching reform. In the fourth part, ”Implementation Suggestions“, the ”Mathematics Curriculum Standard“ (2011 Edition) states: ”Teaching should be based on students’ actual conditions and create problem situations that help students to learn independently.“ ”Professor Zheng Yuxin said: A good mathematical situation should satisfy one basic requirement: in the context of the relevant content, the setting of a particular situation should not only serve as a stepping stone but also not only