文[1]提出了数学对象、数学对象的元及元数等概念,并通过研究数学问题中数学对象的元及元数与条件要素之间的关系,提出了元的思想.本文在此基础上,以等差数列、等比数列的问题为例,探讨元在数学教学中的地位与作用.1与本文相关的一些概念为本文表述方便,现将文[1]中提到的几个 Wen [1] put forward the concepts of math object, math object, element and element, and put forward the idea of ​​meta by studying the relationship between math object’s element and element and condition element in math problem. , We take the problem of equal number sequence and geometric sequence as an example to explore the status and function of meta in mathematics teaching.1 Some concepts related to this paper are convenient for this paper and are mentioned in [1]