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数学概念是数学的逻辑起点,是学生认知的基础,是学生进行数学思维的核心,在数学学习与教学中具有重要的地位.世间万物无不具有其产生与发展的自然性,数学概念也不例外,它的产生与发展应是合理的、水到渠成的,但教材中的很多概念是直接呈现的,缺少其形成过程的介绍,掩盖了这种自然性.教学中如果将这些概念直接强加给学生,不仅会让学生感到定义来得突然,内容比较费解,而且不利于学生掌握其本
Mathematical concept is the logical starting point of mathematics, which is the basis of students ’cognition, is the core of students’ thinking in mathematics and plays an important role in mathematics learning and teaching. All things in the world have its natural origin and development, Exceptions, its emergence and development should be reasonable, well-established, but many of the concepts in the textbook is presented directly, the lack of an introduction to its formation process, to cover up the natural nature of teaching these concepts directly impose on students , Not only make students feel the definition came suddenly, the content is more difficult to understand, but not conducive to students to master the