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ghseh 二次函數的開口方向
Author:
均一
GeoGebra
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兩位數除以一位數（一）
兩位數加法
異分母分數減法
兩組對邊相等的四邊形
畫出對稱圖形
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斜線圖的畫法
生活
圓形,三角形軌跡觀察
Quadratic Graph - QESOSASS
移動愛心
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Scalene Triangles
Algebra
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Reflection