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比一比看谁小
Author:
玖数
比一比看谁小
GeoGebra
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算柱 (兩位數)
sanjiaohanshu
兩位數除以一位數（二）
拼砌四邊形
畫出對稱圖形
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畢式定理 (13)
Problem1:(md+me+mf)/(ad+be+cf)=a
奠基
正12面體內的正四面體製作
Copy of 圖一
Discover Topics
Exponent
Linear Programming or Linear Optimization
Means
Similar Triangles
Combinatorics