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数学史：毕达哥拉斯树
Author:
代国兴 田立新
GeoGebra
New Resources
算柱 (兩位數)
國旗 (作圖步驟直接餵給 Claude)
美國國旗 (Codex, 2026.10.06)
Fibonacci Clock
國旗 (Claude 版)
Discover Resources
圖三
Quadratic Inequalites(ax^2+bx+c)
彩色包絡球
正弦公式2
P6_生趣課_繡曲線
Discover Topics
Rectangle
Centroid or Barycenter
Differential Equation
Parabola
Sphere