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六年制小学数学第三册课本中出现:“把6个桃平均分在3个盘里,每盘2个”,这便引出了“每份数”的概念,即在小学数学中提出了“一份量”的问题。在整个小学数学中,根据学生的认知规律,“一份量”以不同的形式在不同阶段出现.主要有:一倍量,每份量,单一量,单位“1”的量。在数学总复习时,引导学生理解和掌握这一内容,使之对“一份量”的知识体系有清晰的、整体的认识,并能解决相应的实际问题,具有一定的意义。下面就它的几种主要形式结合实例加以说明。一、一倍量问题小学数学第三册中有这样一道例题:“饲养组养了12只小鸡,3只小
The six-year elementary school mathematics book number three appears: “The average of six peaches in three plates, two per dish”, which leads to the “number of copies” concept that is proposed in elementary mathematics “A quantity” of the problem. In primary school mathematics, according to students' cognitive rules, “one quantity” appears in different forms in different stages, mainly including: one quantity, one quantity, one quantity and one “1” quantity. In the general review of mathematics, guiding students to understand and grasp this content, so that the “one amount” of the knowledge system has a clear, overall understanding, and can solve the corresponding practical problems, of some significance. Here are some of its main forms combined with examples to illustrate. First, double the amount of questions The third volume of elementary mathematics there is such a case: "feeding group raised 12 chickens, 3 small