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一元二次方程求根公式
Author:
梁航宇
GeoGebra
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兩位數加法
拼砌四邊形
【案例】2018年全国1卷理科12题
球體建築師
算柱 (兩位數)
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Animacja (kółka)
用極座標做時鐘
判斷柱體11
呵呵
GGBstar
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Mode
Rotation
Rational Numbers
Standard Deviation
Hyperbola