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翰林B4課p227_9
Author:
廖傑成
翰林B4課p.227_9
GeoGebra
New Resources
異分母分數減法
兩位數除以一位數（二）
四邉形 (四年級) 教師版
画直线等分三角形的面积
兩組對邊相等的四邊形
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愛上貝氏曲線 (Love for Bezier)
鑲嵌圖形-2 SAKULA
Copy of 畫三角形 題2c
sin的平移與伸縮
乘法練習
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Difference and Slope
Geometry
Cube
Percentages
Rational Numbers