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数豆豆
GeoGebra
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撒针估算面积实验
常见四边形是否是双心四边形
三角函数 的副本
异形操场
平行線的判定
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學測100-G
Similar triangles inscribed iteration400
堆朵3邊形(試算表版)
PROBLEM SOLVING(COLOUR)
認識梯形的特徵
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Planes
Cube
Polygons
Volume
Coordinates