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任何数学概念都有它产生的背景.我们考察它的来龙去脉,才能够发现它是合情合理的,再通过实例分析概念的本质属性,概括概念,完善概念,进一步巩固和应用概念,这样一步步开展,和谐自然,水到渠成.本文以《正切》教学为例,谈一谈对概念教学六个环节的认识和实践.一、教学过程1.概念的引入生活中经常会听到人们用“陡”这个词形容一个物体的倾斜程度,图1中摆放的两个梯子,你能辨别出那一个比较陡吗?有哪些办法
Any mathematical concept has its background, and if we examine its ins and outs, we can find out that it is fair and reasonable, analyze the essential attributes of the concept through example, summarize the concept, perfect the concept, further consolidate and apply the concept, Harmony and nature, and success .This article takes “tangential” teaching as an example to talk about the six aspects of the concept of teaching knowledge and practice .A teaching process 1 concept of life often hear people use “steep” This term describes the degree of tilt of an object, the two ladders shown in Figure 1, can you tell which one is steeper?