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風車
Author:
李春培
風車
GeoGebra
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找出對稱軸
錐體建築師
算柱 (兩位數)
四邉形 (四年級) 教師版
異分母分數減法
Discover Resources
相同圖形的拼砌（三角形）
雙曲線漸近線
vector
quiz 9.1 1(d)
乘法的副本
Discover Topics
Probability
Natural Numbers
Conditional Probability
Curve Sketching
Solids or 3D Shapes