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1041034 陳竑廷
GeoGebra
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中华人民共和国国旗
活动三：应用性质
科氏力 (Coriolis Force)
龙形曲线-分形龙
盈利與虧蝕
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相同圖形的拼砌（三角形）
三角形外心
DSE Circle-ACT02A Relationship Between Angles and Centre and Circumference
旋轉的概念
三角形重心的变化.许兴华数学
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Curve Sketching
Cube
Cone
General Quadrilateral
Integral Calculus