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KochWithTool
Author:
Peng-Jen Lai 賴鵬仁
GeoGebra
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兩組對邊相等和有直角的四邊形
判斷球體
第八周作业
兩位數除以一位數（一）
三位數除以一位數（一）
Discover Resources
平行四邊形的面積
平行四邊形有甚麼特性？
Prism and Cylinder 3
高中, 直線與點對稱
描点法画三角函数图像
Discover Topics
Logarithmic Functions
Continuity
Cube
Geometric Mean
Solids or 3D Shapes