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zhiaosanjiaoxinggundong
Author:
安迎春
GeoGebra
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兩位數除以一位數（一）
直線的斜率
球体的体积推导（优化版）
漂亮的摇摆曲线
【案例】2018年全国1卷理科12题
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三角形重心(相關說明)
模擬3D---切割與展開
單相感應電動機原理
Properties of a Rhombus
仙后座找北極星1
圓心的軌跡方程式
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Constructions
Arithmetic Operations
Fractions
Addition
Means