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翰林B4習p81_9
Author:
廖傑成
翰林B4習p81_9
GeoGebra
New Resources
四邉形 (四年級) 教師版
第八周作业
兩組對邊相等的四邊形
錐體建築師
兩位數除以一位數（一）
Discover Resources
圆锥的侧面展开图3D动画
地球儀5
Heat Sink Fin
Copie de 河內塔 (Tower of Hanoi)
正弦余弦刻度尺
Discover Topics
Unit Circle
Coordinates
Cosine
Geometric Mean
Means