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在解析几何复习课上,同学们与我一道从一个简单的题目入手,进行问题研究,得出一般性结论,既解决了问题,同时也向同学们展示了一个问题发现、研究、解决的过程,有效地提高了课堂效率.一、提出问题我们先来看一个问题:问题1在平面直角坐标系x Oy中,已知点A(-槡2,0),B(槡2,0),E为动点,且直线EA与直线EB的斜率之积为-12,则动点E的轨
In the analytical geometry review class, the students started with me from a simple topic to carry out the research on the problem and reached the general conclusion that not only solved the problem, but also showed the students a process of discovering, researching and solving problems , Effectively improve the efficiency of the classroom. First, ask questions Let us first look at a question: Question 1 In Cartesian coordinate system x Oy, known points A (- 槡 2,0), B (槡 2,0), E is the moving point and the product of the slope of the straight line EA and the straight line EB is -12, then the moving point E of the track