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GeoGebra
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異分母分數減法
画直线等分三角形的面积
三位數除以一位數(一)
拼砌四邊形
算柱 (兩位數)
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分數加法和減法
正四面體
Book10-Unit7-拼出平行四邊形
時距計算機
S3 WS4.3 Q01(3D圖)
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Correlation
Sine
Statistics
Rhombus
Coordinates