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拼砌多邊形
Author:
Tree
GeoGebra
New Resources
兩位數加法
算柱 (兩位數)
柱體建築師
兩位數除以一位數（二）
三位數除以一位數（一）
Discover Resources
內擺線
優良作品8(宜庭)
捷徑問題 2
軌跡觀察---模擬摺紙
拋物線5-包絡線法
Discover Topics
Conditional Probability
Solids or 3D Shapes
Arithmetic Operations
Ratios
Congruence