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滾滾硬幣
Author:
陳隆期
GeoGebra
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四邊形的特性
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
三位數除以一位數（二）
算柱 (兩位數)
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[問題] 線在面上
Angle Sum of Triangle
正立方體與平面的截面
國旗
翰林數學_2下_CH4-2_平行四邊形性質
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Quadratic Equations
Median Value
General Quadrilateral
Expected Value
Curve Sketching