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概念教学是数学教学的基本内容之一。建立正确和清晰的数学概念,对于进一步的数学学习以及发展初步的逻辑思维能力有着重要的影响。在小学数学教材中,揭示概念的方式主要有两种,一种是定义式概念,即用“属+种差”的形式揭示概念的特有属性,以明确概念;还有一种是描述式概念,多以“范例+描述”或“范例+名称”的形式直观呈现概念的内涵和外延,以便于学生初步了解。其中,用“范例+描述”的形式呈现概念时,常常采用
Concept teaching is one of the basic contents of mathematics teaching. The establishment of correct and clear mathematical concepts has important implications for further mathematical learning as well as the development of primary logical thinking skills. In primary school mathematics textbooks, there are two main ways to reveal the concept, one is the concept of definition, that is, the use of “genus + difference” in the form of revealing the unique properties of the concept in order to clarify the concept; there is a description of the Concept, and more to “paradigm + description” or “paradigm + name” visual presentation of the connotation and denotation in order to facilitate students to understand. Among them, it is often used to present concepts in the form of “examples + description”