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Author:
周錦鋒
GeoGebra
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三位數除以一位數（二）
兩位數加法
四邉形 (四年級) 教師版
四邊形的特性
柱體建築師
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坐標測驗
task8
winter vacation homework 6
畫鐘面的副本
验证勾股定理
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Mode
Real Numbers
Normal Distribution
Stochastic Process or Random Process
Division