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Unrolling a circle 的副本
Author:
Nina Wang
GeoGebra
New Resources
撒针估算面积实验
第三周作业效果演示
比較五件物件的重量
龙形曲线-分形龙
科氏力 (Coriolis Force)
Discover Resources
中國火柴遊戲二
橢圓規
領結的角度
旋轉方塊
平面几何问题
Discover Topics
Definite Integral
Trigonometric Functions
Calculus
Incircle or Inscribed Circle
Probability