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S11G5 Nim游戏与二进位
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学用数学
GeoGebra
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异形操场
盈利與虧蝕
常见四边形是否是双心四边形
活动三:应用性质
第八周作业
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多邊形的切割與拼砌
test for fun
相向而行的兩行進波
Expansion & Factorization 展開與因式分解
圓內接四邊形任務一: 提示一
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Means
Congruence
Calculus
Histogram
Division