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parallelogram
Author:
Ku, Yin Bon (Albert)
GeoGebra
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三位數除以一位數(一)
兩組對邊相等的四邊形
直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
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給錐體一個名字 3
Parabola_Horizontal
假分數化帶分數
Sunrays with different angles
贪吃蛇小游戏
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Step Functions
Algebra
Ellipse
Volume
Constructions