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優良作品4
Author:
Ching-Hui Chou
GeoGebra
New Resources
三位數除以一位數（二）
画直线等分三角形的面积
兩位數加法
球體建築師
球体的体积推导
Discover Resources
waaachen
切3塊拼成正方形
Light Game
quadrilaterals 1
中間人
Discover Topics
Poisson Distribution
Exponent
Solids or 3D Shapes
General Quadrilateral
Tree Diagrams