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GeoGebra
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GeoGebra
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黃斌
GeoGebra
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直線的斜率：水平變化 & 鉛垂變化
异形操场
常见四边形是否是双心四边形
第八周作业2
圓的切線方程
Discover Resources
Sequence指令練習(正n邊形面積的展開)
旋轉+伸縮正多邊形
Copy of 簡易的迷宮
橢圓2--四圓心近似法
学习 GeoGebra 经典应用
Discover Topics
Equations
Arithmetic
Power Functions
Volume
Polynomial Functions