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面積與周界活動
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lkkbmaths teachers 檔案儲存用
GeoGebra
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找出對稱軸
兩位數加法
球體建築師
柱體建築師
三位數除以一位數（二）
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simulation of the uniform variable linear motion
六年級_截面_錐體_多邊形
扇形弧長公式1
正方体展开图的副本
翰林數學_2下_CH4-1_截線與截角的意義
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Boxplot
Arithmetic Operations
Trigonometry
Linear Equations
Interest Calculation