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教学素材：椭圆离心率
Author:
清风拂琴，陌上花开
GeoGebra
New Resources
科氏力 (Coriolis Force)
第八周作业
活动三：应用性质
斐波那契螺旋弧线（表格法-可动态调节）
常见四边形是否是双心四边形
Discover Resources
Angle at Centre
test
四年級
面積的認識4
圓周公式應用題2的副本
Discover Topics
Solids or 3D Shapes
Coordinates
Diagrams
Prism
Circumcircle or Circumscribed Circle