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圓的軌跡
Author:
蔡鈞富
GeoGebra
New Resources
第三周作业效果演示
龙形曲线-分形龙2
平行線的判定
小学资源收集
镂空正方体案例对比
Discover Resources
http://www.qsir.org/?p=8853
作業
猴兄爬樹
三角形面積公式B1
三角形内角和
Discover Topics
Geometric Transformations
Natural Numbers
Median Value
Area
Variance