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繁分数的教学在小学的数学教学中是难点之一.通过教学主要使学生掌握以下几方面的知识:(一)要使学生懂得繁分数的意义.(二)知道主线上下的数不管怎样复杂,上面的数都是分子,下面的数都是分母.懂得繁分数本身是一个分数.(三)掌握繁分数化简的方法,并懂得利用分数与除法的关系,可以把繁分数改写成四则混合算式,从而了解分数线还起着括号的作用.教学时要引导学生从理解繁分数的概念入手,然后讲清繁分数化简的几种方法,这是教学这部分内容的关键.
The teaching of multiplication is one of the difficulties in mathematics teaching in primary school, which mainly enables students to acquire knowledge of the following aspects: (1) to make students understand the meaning of multiplication; (2) to know that the number of main lines is no more complicated , The above number is the numerator, the following number is the denominator. Knowing the number of the multiplicity itself is a fraction. (C) to master the method of multiplication and simplification, and know how to use the relationship between fraction and division, you can rewrite the complex number into four Mixed formulas, and thus understand the fractional line also plays a role in parenthesis teaching to guide students from the concept of understanding the complexity of the number, and then clarify the number of simple ways to reduce the number of fractal, which is the teaching of this part of the key.