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千年曆2
Author:
李春培
GeoGebra
New Resources
異分母分數減法
判斷球體
三位數除以一位數（一）
第八周作业
兩位數除以一位數（一）
Discover Resources
謝爾賓斯基三角形 (Sierpinsky)
ggb-fs-a1
圓與三角形中點的軌跡
Centroid
slope
Discover Topics
Pyramid
Line Segment
Optimization Problems
Tree Diagrams
Linear Regression