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小二 、小三 | 看時間
Author:
Ricky LI
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
判斷球體
四邉形 (四年級) 教師版
三位數除以一位數（一）
三位數除以一位數（二）
直角坐標平面上的旋轉變換
Discover Resources
Angle Sum in a Triangle
http://www.qsir.org/?p=8853
Yeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
重心軌跡
畢氏定理
Discover Topics
Mathematics
Parallelogram
Right Triangles
Straight Lines
Integers