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橢圓軌跡
Author:
Ching-Hui Chou
GeoGebra
New Resources
祖冲之的期望：内棋与外棋
第八周作业
球体的体积推导（优化版）
讀磅
兩位數加法
Discover Resources
Symmetric設計對稱圖案(兩條對稱軸)(斜)
君子球
拋物線的參數
數學傳播39卷4期, 平面幾何公式思考
我的第一个GGB绘本
Discover Topics
Isosceles Triangles
Matrices
Tree Diagrams
Upper and Lower Sum or Riemann Sum
Surface