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在初中算术教材中,分数是最重要的一个组成部份,通过分数的讲授既可以系统地复习和巩固学生在整数中学到的知识,又为小数和百分数的学习准备好必不可少的基础。从数的概念的形成和扩张来看,数的概念是从自然数开始的。零的引入虽然很重要,但是就中学算术教材而言,它没有引起深远的影响,学生接受时也没有足够重视的困难。分数则不然,当数的范围从整数扩张到分数时,学生对于这个新的数的领域是不够熟悉的,必须在学习的过程中逐步地认识到新数的特性,必
In the junior high school mathematics textbook, scores are the most important part. Through the teaching of scores, it is possible to systematically review and consolidate the knowledge that students learn in the integers, and to prepare essential grounds for learning decimal numbers and percentages. From the viewpoint of the formation and expansion of the concept of numbers, the concept of numbers begins with natural numbers. Although the introduction of zero is very important, it has not had a profound effect on middle school arithmetic textbooks. Students have not received enough attention when they accept it. Score is not the case, when the number of the range from the integer expansion to the score, the students are not familiar with the field of this new number, must gradually recognize the characteristics of the new number in the learning process, must