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教學-面與面的夾角
Author:
Lau Sir
GeoGebra
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三位數除以一位數(一)
兩位數除以一位數(一)
畫出對稱圖形
四邉形 (四年級) 教師版
柱體建築師
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畢式定理 (08)
Angle between line and plane
量角器
y=sinx+1,y=2sinx,y=sin2x的圖形
旋转的圆锥内接锥体.许兴华数学
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Geometric Distribution
Combinatorics
LCM and GCD
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