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dynamics dragon
Author:
赵林
GeoGebra
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【案例】2018年全国1卷理科12题
找出對稱軸
GeoGebra笔记功能体验课件
三位數除以一位數（一）
異分母分數減法
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Properties of Inequalities 不等式的加法與乘法性質
蝴蝶定理證明2：綜合法
angles sum on a striaght line
Closure shape
Copy of 圖一
Discover Topics
Circle
Logarithm
Solids or 3D Shapes
Polynomial Functions
Addition