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课堂练习与课外作业是学生数学实践活动的主要场所。因此,如何精选习题,如何进行讲授,如阿布置作业,以便很好地培养学生分析问题和解决问题的能力,是教师备课的基本任务之一,与讲课同等重要,并且直接影响讲课的效果,也影响下一次讲课。题的内容与进行的方式,因讲课内容的不同,而有多种多样。例如,一题多解,可以启发、引导学生灵活运用所学过的各种知识和技巧,从不同角度去思考、摸索、解决同一个问题。我们现在来谈另外一方面:一解多题,即用解一个题的方法解决其他许多有关的题。用一个例子说明如下: 基本问题自己知圆外定点给圆作切线。基本解法这个问题可以用平面几何,也可以用解析几何来解。我们现在采用后者。适当选取坐标系,使圆的方程为
Class practice and homework are the main places where students practice math. Therefore, how to select exercises and how to teach them, such as assigning homework in order to cultivate students’ ability to analyze and solve problems well, is one of the basic tasks of teacher preparation, which is as important as lectures and directly affects the effectiveness of lectures. , Also affect the next lecture. The content of the question and the way it is conducted are varied due to the different contents of the lectures. For example, a multi-pronged solution can inspire and guide students to flexibly use the various learned knowledge and skills to think, explore and solve the same problem from different perspectives. We now turn to the other hand: a solution to multiple questions, that is, to solve one or more questions to solve many other related issues. An example to illustrate the following: The basic problem yourself know round to the circle for the tangent. The basic solution to this problem can be flat geometry, you can also use analytic geometry to solve. We now use the latter. Appropriate selection of the coordinate system, so that the equation of the circle