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.在小学里,我们学过三角形的有关知 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 academic math in Zhang Yuanshi “Trinitarian theorem” charm it. In primary school, we learned about the triangle