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中華民國國旗
Author:
侯杰材
GeoGebra
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兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
異分母分數減法
直角坐標平面上的旋轉變換
四邉形 (四年級) 教師版
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雙搖桿
test
了解圓方程(2)的副本
均分除法（整數÷整數）的副本
面积平分线
Discover Topics
Vectors 3D (Three-Dimensional)
Reflection
Step Functions
Geometric Mean
Tangent Function