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Pentacle
Author:
Jianqiang He
GeoGebra
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兩位數除以一位數（二）
兩組對邊相等的四邊形
判斷球體
錐體建築師
兩組對邊相等和有直角的四邊形
Discover Resources
正立方體內的正四面體
二元算機不等是的一個無字證明
P.4 對稱
Copy of 選擇合適的「中間人」
Copy of 學生自行製作棒形圖
Discover Topics
Fractions
Arithmetic Operations
Parallelogram
Quadratic Equations
Rational Numbers