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海龟爬行
Author:
赵林
GeoGebra
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拼砌四邊形
三位數除以一位數(一)
【案例】2018年全国1卷理科12题
錐體建築師
兩位數加法
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Volume_Section
阿波羅圓
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圓周率的應用 題C
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Distributions
Rational Numbers
Sphere
Integral Calculus
Reflection