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练习是形成良好的心智技能和良好的思维品质的重要手段.设置好练习是培养和提高学生能力的重要环节,尤其是课堂练习.课堂练习的设置要紧扣教材,精心设计.下面谈谈我的几点做法. 一、理解概念——设置发散性练习学生初学概念、定理,往往理解肤浅,为了使学生更好地巩固刚学过的概念、定理,讲完新课后,应有意识、有目的、有计划地编选一些应用本概念或定理的发散性的练习题让学生练习,以加深学生对概念或定理的认识.所谓发散性的练习,就是对概念或定理从多种角度(如正、反、侧面、横纵剖面)着眼去思考、观察、比较、判断,把那些似是而非、模棱两可的东西搞清楚,把握概念、定理的本质属性.我在讲完反比例函数的概念后设置了如下课堂练习:
Exercise is an important means of forming good mental skills and good thinking qualities. Setting up good practice is an important part of cultivating and improving student abilities, especially classroom exercises. The setting of classroom exercises should be closely linked to the teaching materials and carefully designed. Let’s talk about me. A few things to do. First, understand the concept - set divergence practice students beginner concepts, theorems, often to understand superficial, in order to enable students to better consolidate the concepts and theorems just learned, after the completion of the new class, should be conscious, there is Purpose, programmatically select some divergence exercises that use this concept or theorem to allow students to practice in order to deepen students’ understanding of concepts or theorems. The so-called divergent exercises are the concepts or theorems from various perspectives (such as , anti-, lateral, horizontal and vertical profiles) focus on thinking, observing, comparing, judging, and clarifying those plausible and ambiguous things, and grasping the essential attributes of concepts and theorems. I set up the following classes after I finished the concept of inverse proportion functions. Exercise: