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設備設計
Author:
Jia-ming Shiu
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GeoGebra
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算柱 (兩位數)
錐體建築師
四邊形的特性
画直线等分三角形的面积
兩位數除以一位數（二）
Discover Resources
拼貼
可調包絡圓
F5_聯立二元一次不等式
碎形
拋物線2--焦點法
Discover Topics
Numbers
Vectors 3D (Three-Dimensional)
Rational Numbers
Sphere
Straight Lines