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GeoGebra
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GeoGebra
GeoGebra Classroom
GeoGebra
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Author:
Zhang Guangmin
GeoGebra
New Resources
双心四边形
活动三：应用性质
比較五件物件的重量
龙形曲线-分形龙
斐波那契螺旋弧线（表格法-可动态调节）
Discover Resources
Clock
相机光圈模拟（3D）
橢圓規Ellipsograph (Trammel of Archimedes)
S5R1L4圆内迭代反射——朱老师
Quiz on Addition and Subtraction of Directed Numbers (2)
Discover Topics
Cube
Pyramid
Pythagoras or Pythagorean Theorem
Triangles
Geometry