一、联系法:数学概念之间具有联系性,任意数学概念都是由若干个数学概念联系而成。只有建立数学概念之间的联系,才能彻底理解数学概念。例如在学习数列的时候,我们不妨作如下分析:数列是按一定次序排列的一列数,是有规律的。那规律是什么呢?项与项数之间的规律、项与项之间的规律、数列整体趋势的规律。项与项数之间的规律就是我们说的通项公式,项与项之间的规律就是我们所说的递推公式,数列整体趋势的规律就是我们所说的极限问题。当项与项之间满足差数相等的关系时,数列被称为等差数列;当项与项之间满 First, the contact method: the relationship between mathematical concepts, any mathematical concepts are linked by a number of mathematical concepts. Only by establishing the connection between mathematical concepts can we thoroughly understand mathematical concepts. For example, when learning a series, we may wish to make the following analysis: A series of numbers arranged in a certain order is regular. What is the law? The law between the number of items, the law between the items, and the law of the overall trend of the numbers. The law between terms and terms is what we call the general formula, the law between terms and terms is what we call the recursion formula, the law of the overall trend of numbers is what we call the limit problem. When the items and items to meet the difference between the equal relationship, the sequence is called the arithmetic sequence; when items and items between