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納皮爾籌(Napier’s bones)
Author:
pingfeng.wu
Napiers bones
GeoGebra
New Resources
判斷球體
【案例】圆柱体内放置一个大球六个小球
異分母分數減法
兩位數除以一位數（二）
找出對稱軸
Discover Resources
長方形和正方形的面積_題A至E
祖暅之《綴術》：「緣冪勢既同，則積不容異。」
二次函數圖像 Graph of Quadratic Function
Newton's method
題 5
Discover Topics
Planes
Dilation
Linear Functions
Triangles
Percentages