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Author:
chengshihfeng
GeoGebra
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小数 的副本
判斷球體
Fibonacci Clock
Earth with coastline
兩組對邊相等和有直角的四邊形
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判斷柱體 5
Quiz on Addition and Subtraction of Directed Numbers (2) 有向數加減測驗(2)
Ex.2
周界2
拼出三角形的副本
活工(二)Q2
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Natural Numbers
Sine
Polygons
Area
Cube