In ancient times, mathematicians in China have been using equations to solve problems. They use equations to express the relationship between the unknown and the known, and then find the answer to the question by solving the equations.
There are many examples of equations in China's ancient mathematical works. One of the most famous examples is Nine Chapters of Arithmetic. This book is an important work of China's ancient mathematics, which contains 246 mathematical problems and how to solve these problems by using equations.
In this book, there is a question that is described as follows: "There is a chicken and a Weng today, which is worth five; One mother hen is worth three; Chicks, chicks are worth one. For every hundred dollars, buy a hundred chickens. Ask the geometry of chicken, mother and chick? "
This problem can be expressed by an equation. Assuming that the number of chickens is X, the number of hens is Y and the number of chickens is Z, according to the information in the topic, we can establish the following equation:
X+y+z = 100 (total 100)? 5x+3y+z/3 = 100 (total value is 100 RMB).
By solving this set of equations, we can get the number of chickens, hens and chickens. A possible solution is: x=8, y= 1 1, z=8 1. That is to say, there are 8 chickens, 1 1 hen and 8 1 chick.
In order to help children better understand the concept of equation, we can use some vivid pictures to explain the story. In the picture, we can draw some patterns of rooster, hen and chicken, as well as some patterns of coins.
We can express the relationship between the number of chickens, hens and chickens and the total amount of money in the form of equations. We can use line segments and arrows to represent the various parts of the equation and their relationships.
In this way, children can better understand the concept of equations and how to use equations to solve practical problems. At the same time, it can also introduce the achievements of ancient mathematicians in China and their contribution to the development of mathematics in the world.
In a word, it is a very effective method to explain the concept of equation with vivid pictures and stories. This can help children better understand this abstract concept and stimulate their interest and hobby in mathematics.