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Author:
劉家宏
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GeoGebra
New Resources
算柱 (兩位數)
異分母分數減法
兩位數加法
兩組對邊相等和有直角的四邊形
四邊形的特性
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CLOCK
正四面體對邊向量垂直作圖證明
填滿與旋轉
概率与频率关系
任意角的三角函数
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Line Segment
Cone
Vectors
Random Variables
Normal Distribution