一看到“模型”这个词,你首先想到的是什么?汽车模型?飞机模型?这些都是依照实物的形状和结构按比例制成的物品.那么什么是数学模型?数学模型思想是如何体现的?本文以二元一次方程组为例,带领大家认识数学模型,体会数学模型思想.一、接触数学模型——“鸡兔同笼”问题“鸡兔同笼”问题(如图1)是一个经典名题,在许多教材中都出现过.对于我们七年级 What do you first think of when you look at the word “model”? Car models? Aircraft models? These are items that are scaled according to the shape and structure of the object. So what is a mathematical model? The mathematical model is How to Embody? In this paper, we take the bivariate linear equations as an example, leading us to understand the mathematical model and understand the idea of ​​mathematical model.First, the contact mathematical model - “chicken with rabbit cage” problem “chicken with rabbit cage” problem (Figure 1) is a classic title that has appeared in many textbooks. For our seventh grade