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俄罗斯方块（第二版）
Author:
孟宝兴
GeoGebra
New Resources
第八周作业1
撒针估算面积实验
科氏力 (Coriolis Force)
正方形雪花图案
活动三：应用性质
Discover Resources
倫敦滾石橋
中点轨迹
橢圓的定義
ghseh 二次函數描點法左右平移-5
圆台的侧面展开动画
Discover Topics
Statistics
Cuboid
General Quadrilateral
Geometric Transformations
Polynomial Functions