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变式是在概念由具体向抽象过渡的过程中,为排除由具体对象本身的非本质属性带来的干扰而提出来的。根据概念的不同类型和概念学习的不同阶段而设计的变式,不仅可以在概念引入、形成的过程中使用,也可以在概念的应用中使用。变式作为概念学习的有效工具,能帮助学生从“变”的现象中发现“不变”的本质,深化对数学概念的理解,最终实现对概念的本质属性和规律的把握。本文试图以数学概念学习的各个环节为着眼点,探讨变式在每个环节的不同呈现方
Variants are proposed in order to eliminate the interference caused by the non-essential attribute of the concrete object in the process of changing the concept from concrete to abstract. Variants designed according to the different types of concepts and different stages of the concept learning can be used not only in the process of concept introduction and formation but also in the application of concepts. As an effective tool of concept learning, variant can help students to discover the essence of “immutable” from the phenomenon of “change”, deepen the understanding of mathematical concepts, and finally realize the grasping of the essential attributes and laws of concepts. This article attempts to study all aspects of mathematical concepts for the focus, to explore the different variants of each presentation of the parties