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Author:
cktsang
permutation (chi. ver.)
GeoGebra
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GeoGebra笔记功能体验课件
判斷球體
三位數除以一位數（一）
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
Discover Resources
Properties of Inequalities 不等式的加法與乘法性質
UpdateConstruction
How to draw an octagon with ruler and compasses?
二次函數的圖形的副本
完全平方公式
Discover Topics
Straight Lines
Solids or 3D Shapes
Probability
Perimeter
Line Segment