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怎样才能提高課堂教学的貭量?从不断的教学实踐中,我們有过不少教訓,也有一些零星的体会,現在把它綜述如下。 1.从学生认識事物的規律和教材的特点出发,研究讲解的方法。直观的具体的东西,容易为人們所认識,因之,教学工作,应該力求具体、直观。我們在讲不等式的例題“相同周长的矩形中,面积最大的是正方形”时,用一个簡单的模型演示了一下,說明这样几点:(1)相同周长的矩形有无穷多个;(2)这些矩形的面积是不等的,其变化規律是从小到大,又从大到小;(3)由这个变化規律,可以断定共間必有一个矩形的面积是最大的。然后再經过証明,学生就从实际和理論两方面掌握了这个知識,同时
How can we improve the quality of classroom teaching? From the teaching practice, we have had a lot of lessons, but also some sporadic experience, and now it is summarized as follows. 1. From the students understand the laws of things and the characteristics of teaching materials, research methods to explain. Intuitive and specific things, easy to be recognized by the people, because of teaching work, we should strive to be specific and intuitive. When we talk about the inequality example “the rectangle with the same perimeter is the square with the largest area”, we demonstrate it with a simple model and show the following points: (1) There are infinitely many rectangles of the same perimeter; (2) The area of these rectangles is unequal, and its variation is from small to large and from large to small. (3) From this variation, it can be concluded that there must be a rectangle with the largest area between the two. It is then proved that the student masters this knowledge both physically and theoretically, and at the same time