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GeoGebra
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兩位數加法
畫出對稱圖形
兩位數除以一位數（一）
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
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中學(初中)
三线八角
一位数加减法运算自我测评
三角函数的变换
翰林數學_2下_CH4-3_梯形中線性質
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Fractal Geometry
Quadratic Equations
Hyperbola
Distributions
Arithmetic Operations