新课程理念下焦半径教学之我见

新的高中数学课程标准在“以学生发展为本”的理念下,要求学生转变学习方式,教师积极探索新的课堂教学方式,师生转变教与学的观念.所以在数学教学中要突出知识的发生过程和发展过程以及学生思维的接受过程,培养学生提出问题、分析问题、解决问题的能力.文章以椭圆双曲线的焦半径为例,说明在数学教学中教师如何引领学生分析问题、探索问题和发现问题.

On the Burnt Radius Teaching from the New Course Idea

With the aim of 'primitively develop students',the new high school mathematics course standard requires students to change their studying ways,and the teachers to explore the new method of classroom instruction actively.Teachers and students change their former ideas of learning and teaching.So during teaching we should emphasize not only the knowledge's emergence course and evolution course but the students' acceptance course.We try to develop students' ability of proposing the problem,analyzing the problem,and solving the problem.The article takes oval and hyperbolic burnt radius as an example to illustrate how the teacher leads students to analyze the question,explore the question and discover the problems in the mathematics teaching.