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相反數
Author:
pingfeng.wu
Topic:
Fractions
國中數學7上：相反數
GeoGebra
New Resources
兩位數加法
算柱 (兩位數)
判斷球體
拼砌四邊形
找出對稱軸
Discover Resources
圓錐曲線
優良作品3(祥恩)
How to draw a heptagon with ruler andcomp…
小棒
劉徽的「割圓術」
Discover Topics
Inequalities
Polynomial Functions
Quadratic Equations
Means
Sine