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概念教学是“双基”教学的核心内容。要使学生理解和掌握概念,关键在于引导学生揭示概念的本质特征。定义是概念的主要表示形式。因此,引入概念、给出定义后要引导学生对定义进行认真的剖析。剖析定义的主要方法有: 一、对定义中关键字和句子进行剖析数学定义语言简炼,用词准确。把定义中的关键字、词和句子的关系分析透彻,辩别清楚,对学好定义十分必要。下面举例说明。
Concept teaching is the core content of “double-basic” teaching. To make students understand and grasp the concept, the key is to guide students to reveal the essential features of the concept. Definitions are the main representation of concepts. Therefore, after introducing concepts and giving definitions, students should be guided to analyze the definitions carefully. The main methods of analysis and definition are as follows: 1. Analysis of keywords and sentences in the definition Mathematical definition of language is concise and accurate in terms of words. The analysis of the relationship between keywords, words, and sentences in the definition is thorough, clear-cut, and necessary to learn a good definition. The following is an example.