论文部分内容阅读
张景中是河南汝南县人,计算机科学家,数学教育家,数学科普作家,中国科学院院士.他从利用面积的解题思路出发,创立了“教育数学”思想与课程体系,让我们跟着周老师的“解读”去领略张院士的教育数学中“三共定理”的魅力吧.(接上期)在一些问题中,往往只要知道两个三角形面积的比,而并不需要具体计算出这两个三角形的面积来,这时共高定理提供的信息就比面积公式有用了.下面按张景中先生的思路,由共高定理
Zhang Runzhong is a native of Runan County, Henan Province, a computer scientist, a math educator, a mathematical science writer and an academician of the Chinese Academy of Sciences. From the idea of using area to solve problems, Zhang Jingzhong founded the thought and curriculum system of “Education Mathematics” Teacher’s “Interpretation” To Understand the Charm of “Three Common Principles” in Zhang Yuanshi’s Educational Mathematics (Continued) In some questions, it is often necessary to know the ratio of the area of two triangles without any specific calculation The area of these two triangles comes, then the information provided by the total high theorem is more useful than the area formula.According to the idea of Mr. Zhang Jingzhong,