数形如何巧结合

• 作 者: 柴静仪
• 机 构: 甘肃省华亭县东华小学,
• 出 处: 数学大世界(教学导向)
• 发表日期: 2012年05期

数形结合是小学数学中常用的、重要的一种数学思想方法。数形结合思想的实质即通过数形之间的相互转化,把抽象的数量关系,通过理想化抽象的方法,转化为适当的几何图形,从图形的结构直观地发现数量之间存在的内在联系,解决数量关系的数学问题,这是其一。其二,或者把关于几何图形的问题,用数量或方程等表示,从它们的结构研究几何图形的性质与特征。在小学数学中,用得最多的是前者,而且在应用题的分析求解中,通常是将数量关系转化成线段图。

Combination of numbers is a commonly used in primary school mathematics, an important mathematical method. The essence of the idea of ​​number combination is to transform the relationship between abstract quantity and quantity into the appropriate geometry through the mutual transformation between numbers, and to intuitively discover the intrinsic relationship between quantity through the structure of figure , To solve the mathematical relationship between the number of issues, this is one of them. Second, either the problem of geometry is expressed in terms of quantities or equations, and the nature and characteristics of the geometry are studied from their structure. In elementary mathematics, the most used is the former, but also in the analysis of the application of the problem-solving, the quantitative relationship is usually converted into line drawings.