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人教A版数学《选修4-4》第二讲中有这样一道例题:如图1,O是直角坐标原点,A,B是抛物线y2=2px(p>0)上异于顶点的两动点,且OA⊥OB,OM⊥AB并与AB相交于点M,求点M的轨迹方程.这是一道很具有典型性和代表性的题,是我们学习解析几何的一个很好的素材,这节课可充分运用探究式教学,培养学生解析几何的思维品质,为解决高考中有关解析几何压轴大题奠定很好的基础.本文中,笔者尝试从以下几个方面来引导探究.
People teach A version of mathematics “Elective 4-4” There are two examples of the second lecture: Figure 1, O is the origin of Cartesian coordinates, A, B is the parabola y2 = 2px (p> 0) Point, and OA ⊥ OB, OM ⊥ AB and AB intersect at the point M, and find the trajectory equation M. This is a very typical and representative of the problem, we learn analytic geometry is a good material, This lesson can make full use of inquiry-based teaching, cultivate the students thinking quality of analytical geometry, in order to solve the college entrance examination on the analytical geometry finale laid a good foundation.In this article, I try to guide the inquiry from the following aspects.