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正方形
Author:
何嘉驹
GeoGebra
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比較五件物件的重量
异形操场
中华人民共和国国旗
椭圆内切圆链
第三周作业效果演示
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peacock2
Quiz on Special Lines in Triangles 三角形內的特殊線:測驗
(正)長方體
翰林數學_2下_CH3-1_三角形的外角定理
倍數
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Prism
Logarithmic Functions
Bar Chart or Bar Graph
Geometric Distribution
Numbers