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梯形面積(求上底)
Author:
lkkbmaths teachers 檔案儲存用
GeoGebra
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兩位數加法
兩組對邊相等的四邊形
近似值：有效數字
錐體建築師
兩位數除以一位數（二）
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GeoGebra
聖者即正義
三角函數的繪圖1
Measure of Dispersion
Illusion-平行线错觉
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Normal Distribution
Trapezoid
Similar Triangles
Parallelogram
Logarithm