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数学概念的建构,需要经过一个建立和巩固的过程。在这个过程中,恰当地运用比较,能够使学生的思维逐渐清晰,形成自己的思维表征,最终获得概念的巩固和强化,达到学以致用的目的。下面,笔者以“认识负数”一课教学为例,谈谈自己的思考。一、在比较中引入负数的概念,激发学生的兴趣根据数学课程标准的要求,本课的教学目标是使学生能够通过日常生活的特定情境,深化对负数的意义的认识,
The construction of mathematical concepts needs to go through a process of establishment and consolidation. In this process, the proper use of comparison, can make students gradually clear thinking, form their own thinking, and finally get the concept of consolidation and strengthening, to achieve the purpose of learning to use. The following, the author of “Negation ” class teaching, for example, to talk about their own thinking. First, the introduction of negative concepts in the comparison to stimulate student interest According to the requirements of the mathematics curriculum standards, the teaching objective of this lesson is to enable students to deepen their understanding of the meaning of the negative through the specific context of daily life,