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圆锥曲线定义的探索及运用

2012-04-29姚恒

课程教育研究 2012年5期
关键词:标识码分类号数形

姚恒

【中图分类号】G633.6 【文献标识码】A 【文章编号】2095-3089(2012)05-0102-02

教学目的:

(1)掌握圆锥曲线的两种定义;

(2)能运用圆锥曲线的定义推导焦半径公式;

(3)能运用圆锥曲线的定义和焦半径公式解题;

(4)掌握类比推理、数形结合、消元引参、不等式求范围等数学思想;

(5)在复习阶段树立重视课本、研究课本的理念;

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