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Author:
Ricky Chan
GeoGebra
New Resources
兩位數除以一位數（二）
異分母分數減法
【案例】2018年全国1卷理科12题
柱體建築師
第八周作业
Discover Resources
挑战中考压轴题
菱形六十面體
圓形墊圈 (Washer) 2
猴兄爬樹
有趣的梯形面積問題
Discover Topics
Set Theory
Stochastic Process or Random Process
Expected Value
Mode
Orthocenter