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七巧板.ggb
Author:
郭勇
GeoGebra
New Resources
算柱 (兩位數)
三位數除以一位數（二）
四邊形的特性
四邉形 (四年級) 教師版
美國國旗 (Codex 版)
Discover Resources
Cube
二次函數圖形(1)
Ruler
時鐘
拋物線3--平行四邊形法
Discover Topics
Geometric Mean
Rotation
Conic Sections
Hypergeometric Distribution
Straight Lines