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Author:婉鈴吳, GeoGebra Institute of Hong Kong

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第八周作业
兩位數加法
判斷球體
四邉形 (四年級) 教師版
三位數除以一位數（一）

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柏拉圖宇宙模型
商高定理之新月形
斜射光三角量測
q5-10
比較角的大小

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Addition
Isosceles Triangles
Sine
Standard Deviation
Quadrilaterals

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