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Author:
johnmayhk
GeoGebra
New Resources
兩位數除以一位數（二）
拼砌四邊形
兩位數加法
三位數除以一位數（一）
判斷球體
Discover Resources
Binomial Formula
雙曲線教學_2016
CircleIII
格子點
我的第一个GGB绘本
Discover Topics
Interest Calculation
Frequency Distribution
Optimization Problems
Histogram
Percentages