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Author:
孟宝兴
GeoGebra
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球體建築師
三位數除以一位數（一）
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
異分母分數減法
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坐標測驗
兩點長度
正立方體展開
大小相同串珠
z20联盟数学考试第七题
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Random Experiments
Difference and Slope
Linear Programming or Linear Optimization
Diagrams
Cuboid