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探索金字塔高度
Author:
孤思客
GeoGebra
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兩組對邊相等的四邊形
四邉形 (四年級) 教師版
第八周作业
畫出對稱圖形
【案例】2018年全国1卷理科12题
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恭喜發財，土地公籤詩
Quiz on Addition and Subtraction of Directed Numbers (2) 有向數加減測驗(2)
二年級-柱體的觀察
太极图
圖形的周界
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Correlation
Subtraction
General Quadrilateral
Diagrams
Optimization Problems