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Author:
李政憲
GeoGebra
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判斷球體
球體建築師
兩位數加法
錐體建築師
四邉形 (四年級) 教師版
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柱體建築師 1
From:PTT 國小題目求面積
不規則填色
閱讀月曆
正方形的邊長和周界
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Normal Distribution
Root
Pyramid
Random Variables
Random Experiments