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Author:
W.L. Wong, Albert
GeoGebra
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四邉形 (四年級) 教師版
球体的体积推导（优化版）
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
三位數除以一位數（二）
Discover Resources
Demo 1
長方形分割
等分格線上的向量
正多角錐(可輸入底面邊數)
心電感應
Discover Topics
Trigonometry
Vectors 3D (Three-Dimensional)
Symmetry
Tangent Function
Sequences and Series