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分數加法
Author:
iedc
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
畫出對稱圖形
拼砌四邊形
三位數除以一位數（一）
第八周作业
Discover Resources
兩個骰子的點數和
垂直線的斜率關係
Add and subtract (binary) 2
Ｍy GGC-1
金惠吉：正弦交流电演示
Discover Topics
Algebra
Trigonometric Functions
Parametric Curves
Hyperbola
Rhombus