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納皮爾籌(Napier’s bones)
Author:
pingfeng.wu
Napiers bones
GeoGebra
New Resources
算柱 (兩位數)
拼砌四邊形
【案例】圆柱体内放置一个大球六个小球
【案例】2013年安徽高考15题
兩位數除以一位數（一）
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時鐘小幫手
對稱圖形
假的龍珠
錐體體積比較
Parallelogram
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Exponent
Differential Calculus
Volume
Ratios
Standard Deviation