论文部分内容阅读
几何复习中如何使所学的知识前后联系,纵横沟通,达到温故而知新的目的呢?认真挖掘课本素材,充分发挥例习题的作用,是较好的方法之一.课本中的例习题一般都具有典型性,有再利用的价值.教学过程中,若能对课本中的例习题作深入的研究、延伸、变通、拓展,便能引出一些新结论、新问题,尤其是在几何复习中将会起到事半功倍、举一反三的效用,从而避免“题海战术”,更有利于培养学生的发散思维能力.历年来的中考试题就有不少是从课本例习题演变和延伸出来的.现举数例加以说明.
How to make the knowledge in the geometry review before and after contact, vertical and horizontal communication, to achieve the purpose of updating the old and the new knowledge? Excavate the textbook material, give full play to the role of the example exercises, is one of the better methods. Examples of exercises in textbooks All of them are typical and have the value of reuse. In the teaching process, if we can carry out in-depth study, extension, modification, and expansion of the example exercises in the textbook, we can elicit some new conclusions and new problems, especially in the geometry review. It will play a multiplier role and be effective in order to avoid “sea tactics” and is more conducive to cultivating students’ divergent thinking skills. Many of the mid-term test questions over the years have evolved and extended from textbook examples. Several examples to illustrate.