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化学基本概念是中学化学基础知识的核心,我们在化学教学中必须重视基本概念的教学。现就化学基本概念教学的一般步骤和方法,谈一点个人的看法。 (一)从实际出发,引出概念。我们知道概念是事物本质属性在人脑中的反映,而它的这一本质属性又是通过下定义的方法来揭示的。在讲授一个新概念时,决不能一开始就简单地把概念的定义硬搬给学生,必须把学生对概念的认识建立在丰富的感性材料上,遵循从“生动的直观”到“抽象的思维”的规律,采用对“对象”的“比较、分析、综合、抽象、概括”的逻辑方法,逐步建立概念。具体引入概念的方法,常用的有以下几种:
The basic concept of chemistry is the core of the basic knowledge of middle school chemistry. We must pay attention to the teaching of basic concepts in chemistry teaching. Now I will talk about the general steps and methods of the basic teaching of chemistry and talk about personal opinions. (a) From the actual point of view, lead to the concept. We know that concept is the reflection of the nature of things in the human brain, and this essential property of it is revealed by the methods defined below. When teaching a new concept, the definition of the concept must not be simply transferred to the students from the very beginning. The student’s understanding of the concept must be based on rich sensuous materials, following from “vital intuition” to “abstract thinking. “The law of ”using“ the ”object“ of ”comparison, analysis, synthesis, abstraction, generalization," the logical method, and gradually establish the concept. Specific introduction of the concept of methods, commonly used are the following: