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初中化学主要概念和原理的理解和掌握是学好化学的基础,它包括物质组成和结构、物质性质和变化、物质分类和命名、化学用语以及溶液.这部分内容教学的难点有以下几方面:(1)基本概念和原理具有抽象性、逻辑性和概括性的特点,学生不好直接感知、容易使自己的认识停留在低级的感性阶段;(2)教师对于概念和原理的教学大多采用“注入式”教学模式,只重视学生对基本概念的掌握,忽视对能力
The understanding and mastery of the main concepts and principles of junior high school chemistry is the basis for learning chemistry well, which includes the composition and structure of matter, the nature and variety of matter, the classification and naming of substances, chemical terms and solutions. The difficulties of teaching in this part are as follows: 1) the basic concepts and principles of abstract, logical and general characteristics of students not directly perceived, easy to make their own knowledge stay in the low-level sensory phase; (2) the teaching of the concept and principle teachers mostly use Injecting "teaching mode, only emphasize students’ mastery of basic concepts and neglect their abilities