一、教材分析椭圆是常见曲线,学生通过引言课及日常生活经验,对椭圆已有一定认识,并且学过求简单曲线方程和利用曲线方程来研究曲线几何性质的初步知识。本节是在这个基础上学习求椭圆方程,并在学习这一 First, the textbook analysis Ellipse is a common curve, the students through the introduction lesson and daily life experience, have some understanding of the ellipse, and learned the simple curve equation and the use of curve equations to study the geometric properties of the initial knowledge of the curve. This section is based on learning to find elliptic equations and learn this one