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BkD_act15_02c
Author:
Luk Sir
GeoGebra
New Resources
異分母分數減法
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
判斷球體
球體建築師
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垂心的動畫
螺線相似正N邊形
圖形D
用面積逼近圓周率的副本
我的第一个GGB绘本
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Linear Regression
Functions
Right Triangles
Boxplot
General Quadrilateral