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谢尔宾斯基三角形
Author:
孟宝兴
GeoGebra
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兩位數加法
拼砌四邊形
三位數除以一位數（二）
判斷球體
柱體建築師
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前景背景
三角形3,4,5
Quadratic Inequalites(ax^2+bx+c)
盾牌~~~~
sin(x) 的函數圖形 的複本
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Rational Numbers
Quadratic Functions
Hypothesis Testing
Standard Deviation
Triangles