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三角形面積(由面積求高)
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lkkbmaths teachers 檔案儲存用
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兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
第八周作业
球體建築師
畫出對稱圖形
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方輪與方路
立體圖形 錐體
Testing
試算表應用
拋物線1-焦點法
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Ellipse
Cosine
Real Numbers
Differential Calculus
Natural Numbers