一、背景当代美国著名数学家哈尔莫斯曾说:问题是数学的心脏。那什么是问题?所谓的问题,不是学生能立即作答的,是要能引发讨论、具有一定思维价值的问题。在数学教学中的核心问题,当然首先要符合问题的特征,另外还要满足教学的需要。它可以是指针对概念的本质所提的问题,也可以是指为了探究知识的来龙去脉而在关键环节所提的指向性问题。还可以是指在学生认知困惑处的方法指引或者思路点拨。因此,在教学中,核心问题要因教学内容而具 First, the background of contemporary famous American mathematician Halmusi once said: the problem is the heart of mathematics. So what is the problem? The so-called problem, not a student can immediately answer, is to trigger discussions, have a certain value of thinking. Of course, the core issue in mathematics teaching must first meet the characteristics of the problem and, in addition, meet the needs of teaching. It can be referred to the nature of the concept of the problem, it can mean that in order to explore the ins and outs of knowledge in the key aspects of the proposed point of issue. Can also refer to the method of cognitive confusion at the student guidelines or ideas point. Therefore, in teaching, the core issue should be due to the teaching content