我们在教学中经常抱怨学生“怎么这么简单的问题还是不会呢?”或者“讲了这么多遍怎么还是做错呢?”。静下心来追根溯源会发现,很多学生之所以在我们看似很简单的问题上出错,是因为他们对最基本的概念理解不清。很多教师在课堂教学时往往会忽视概念的教学,而只注重习题的训练。如果我们能在概念教学或者复习的过程中让学生理解概念的本质,然后利用概念就可以解决该知识点的很多问题了。数学概念是人对客观事物中有关数量关系和空间形式方面本质属性的抽象。概念反映的所有对象的共 In our teaching, we often complain about students’ “How could such a simple problem still not be?” or “Why have you done so many times?”. If you calm down, you will find that many students make mistakes on our seemingly simple questions because they understand the most basic concepts. Many teachers tend to ignore the concept of teaching in class teaching, but only focus on the training of exercises. If we can let students understand the nature of the concept during the conceptual teaching or review process, then using the concept can solve many problems of this knowledge point. The concept of mathematics is the abstraction of the essential attributes of human beings in terms of quantitative relations and spatial forms in objective things. The concept reflects the totality of all objects