本文试图从小学数学概念的讲解和巩固两个方面对教学谈几点意见:一、按照大纲和教材的要求讲清概念1.抓住表达概念的词语,从定义的结构上进行讲解。概念一经引入,教师首先应当讲清概念的定义或用以代替定义的描述。这时,应以大纲为准绳,以课本为依据,不要随意增删或改换说法。例如,第八册课本中关于“整数”的概念是这样叙述的:“自然数和0都是整数”。有的教师漫不经心地把这句话说成:“自然数和0就是整数”。虽只一字之差,从长远看却不妥。因为除了自然数和0之外,小学暂不学习的负整数也是整数。若说“自然数和0就是整数”,就把 This article tries to talk about the teaching from the two aspects of explaining and consolidating the concepts of mathematics in elementary school: First, to clarify the concepts according to the requirements of the outline and teaching materials 1. Grasping the expression of the concept of words to explain the structure of the definition. Once the concept is introduced, teachers should first clarify the definition of the concept or replace the definition of the description. At this time, the outline should be used as the guideline, based on the textbook, do not add, delete or change at will. For example, the eighth book on the concept of “integer” is described as: “natural and 0 are integers.” Some teachers carelessly say this sentence: “natural numbers and 0 is an integer.” Although only one word difference, in the long run it is not proper. Because in addition to the natural number and 0, the primary school not to learn a negative integer is also an integer. If you say “natural number and 0 is an integer,” put it