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1959年高小第二册算术教材(暂用本)内容分为公制度量衡,四则式题和应用题,几何初步知识,数的整除四个部分。本期新教材删去了公制度量衡和数的整除部分,增加了小数四则运算,这部分教材原是高四册教材,下放到本册。我们认为是恰当的。因为小数四则运算的法则和过程与整数四则运算的法则和过程完全相同,小数四则运算中必须利用积、商变化和十进复名数的原理原则,把小数四则运算安排在高二册来,就能使新旧知识的衔接更加紧密,就可以避免象过去在高四册学习小数时往往因对积商变化和十进复名数的遗忘,而造成学习上的困难。按照数的发展规律,是由整数发展到分数,由分数引出小数。小数部分下放到高二册,教材中小数的产生仍是从分
In 1959, the second volume of high and small arithmetic teaching materials (tentative use of the content) is divided into four parts: metric metric, four types of questions and application questions, geometric preliminary knowledge, the number of divisions. This issue of new teaching material removed the metric division and the number of divisible parts, an increase of four decimal places, this part of the textbook was originally four textbooks, decentralized into this book. We think it is appropriate. Because the rules and processes of the FOUR FOUR operations are exactly the same as those of the FOUR FOUR OPERATORS, the principles and principles of the FOUR FOUR operators must be based on the principle of product, quotient, and decimal repeat. The convergence of new and old knowledge can be made more closely and the learning difficulties can often be avoided as the past few years have forgotten the changes in the number of registered traders and the number of decimals when they study decimals. According to the law of the number of development, is the development of fractions from the integer, fractional leads to decimal. Decimal part of the decentralization, textbooks in the decimal is still from the points