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教材是有关教育专家智慧的结晶,教材中的例题或习题具有典型性和代表性,通过对例、习题的拓展研究,能有效理解、巩固所学知识,并灵活应用.本文以人教A版选修教材中一道习题为例,通过改变问题的条件、改变问题的背景、改变问题的结论等几个方面进行深入探究,以期抛砖引玉.课本是我们学习知识的主要来源,是教
Textbook is the crystallization of the wisdom of educational experts, teaching materials in the examples or exercises typical and representative, through the study of cases, exercises, can effectively understand, consolidate the knowledge, and flexible application.In this paper, people teach A version Elective textbooks in an exercise as an example, by changing the conditions of the problem, changing the background of the problem, to change the conclusions of the problem and other aspects in-depth exploration, with a view to throwing bricks and stones.Textbook is the main source of our knowledge, is to teach