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對稱之美
Author:
Cathyyu920311
GeoGebra
New Resources
四邉形 (四年級) 教師版
四邊形的特性
三位數除以一位數（二）
GeoGebra笔记功能体验课件
異分母分數減法
Discover Resources
史坦納圓鍊 (Steiner Chain)
Staff Development Temp
工作紙題3
一道三视图的题目（三视图作法参考）
工作紙(1) 思考題
Discover Topics
Optimization Problems
Quadratic Equations
Ellipse
Terms
Integral Calculus