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MathChou
GeoGebra
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兩位數除以一位數（一）
判斷球體
找出對稱軸
算柱 (兩位數)
拼砌四邊形
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把四邊形分類
排列
冪函數
gjh-b03-01 圓與直線關係
多邊形與圓_2
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Set Theory
Linear Regression
Ratios
Intersection
Fractions