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(時分)量度活動所用旳時間
Author:
marcolee201314
GeoGebra
New Resources
撒针估算面积实验
中华人民共和国国旗
异形操场
龙形曲线-分形龙
斐波那契螺旋弧线（表格法-可动态调节）
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test01
Circle
跑馬燈
方格纸上画平行线和垂线
qqqqqqqqqq
Discover Topics
LCM and GCD
Rhombus
Sine
Power Functions
Mathematics