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折扣 例1的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
兩位數除以一位數（二）
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
畫出對稱圖形
球体的体积推导（优化版）
Discover Resources
Conductivity
分布圖
異分母分數加法
Circumcentre
探索到两定点的距离之积为定值的点的轨迹
Discover Topics
Statistics
Histogram
Arithmetic Mean
Real Numbers
Trigonometric Functions