新课程标准提出“动手实践、主动探索、合作交流、积极思考”都是学习数学的重要方式。“先学后导、以学定教”成为新课程视域下的主要教学模式。这种教学模式在有效提升学生自主学习能力的同时,又不忽略老师的主导地位,真正实现教师的导和学生的学之间的和谐统一。“先学后导、以学定教”在强调学生主体地位的同时,也突出了教师的导学作用。教师导学是建立在学生自主学习的基础上,准确、适时的导学带动学生主体地位的充分体现。而如何引领学 New curriculum standards put forward “hands-on practice, take the initiative to explore, cooperation and exchange, positive thinking ” are important ways to learn mathematics. “First learn to guide, to learn to teach ” has become the main teaching mode under the sight of the new curriculum. This teaching mode can not only neglect the dominance of the teacher but also realize the harmonious unity between the teacher’s guidance and the student’s learning while effectively improving students’ ability to learn independently. “First learn after the guide, to learn to teach ” emphasizes the student’s dominant position, but also highlights the teacher’s guiding role. Teacher guidance is based on the independent study of students, accurate and timely guidance to drive students to fully reflect the dominant position. How to lead the study