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GeoGebra
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拼砌四邊形
判斷球體
兩位數加法
兩位數除以一位數(二)
【案例】圆柱体内放置一个大球六个小球
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長方體旋轉
乘法1
藝術著色2
王宏銘Proof93
US Unemployment 200701~201707
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Matrices
Square
Coordinates
Step Functions
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