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一、教材简析 “九义”六年制小学数学第三册第四单元“表内除法(一)”是学生学习除法的开始。从除法应用来看,通常分为两种情况,也就是两种分东西的方法:一种是把一个数平均分成几份,求每份是多少;另一种是把一个数按照每几个分成一份,求分成多少份。前者是“逐一分”,后者是“逐份分”。这两种情况归结起来都是平均分”,只是分的方式不同。教学除法的初步认识,就要使学生按照“九义”教材的这一思路,通过直观的、形象的、描述性的方式知道除法的含义,分清这两种分法。
First, the textbook analysis “Nine meaning” six-year elementary school mathematics third unit fourth unit “division of the table (a)” is the beginning of student learning division. From the division of application of view, usually divided into two situations, that is, two ways to divide things: one is the average number of divided into several, and what is the number of each; the other is a number according to each few Divided into one, divided into how many copies. The former is “one by one,” while the latter is “by-one.” These two cases are summed up in the mean score, “but only in different ways.According to the preliminary understanding of teaching division, we should make students follow the idea of” Nine Meanings "teaching materials, through an intuitive, visual, descriptive way Know the meaning of division, distinguish between the two points.