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一、对分数乘法解决问题与分数除法解决问题的思考小学高年级教材中的分数解决问题是四则运算在实际生活中的综合运用,它实际上是“因数×因数=积”这一数量关系的应用。之前,学生已经学过“求一个数的几倍是多少”的实际问题,到了高年级,这个“倍数”由整数倍发展到分数倍,数量关系由“求一个数的几倍是多少”发展到“求一个数的几分之几是多少”。因此,教学分数解决问题,首先要引导学生认识这一转化,实现知识的迁移。
First, the fractional multiplication method to solve the problem and solve the problem of fractional division of thinking in elementary school textbooks to solve the problem of high scores in the four operations in the integrated use of real life, it is actually the “factor × factor = product” this number Application of the relationship. Previously, students had already learned the practical problem of “how many times is the number of a number?”, And in the upper grades, the “multiple” is developed from integral multiple to fractional multiple. The quantitative relationship is determined by How many times is the “number” to “how many of the numbers?” Therefore, teaching scores to solve the problem, we must first guide students to understand this transformation, the transfer of knowledge.