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y=ax^2+bx+c
Author:
Albert Wong
GeoGebra
New Resources
双心四边形
斐波那契螺旋弧线（表格法）
活动三：应用性质
第八周作业2
科赫雪花
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恭喜發財，土地公籤詩
弹簧变化
一次因式檢驗法(2020新版)
折纸成抛物线
尝试绘本
Discover Topics
Multiplication
Cosine
Plane Figures or Shapes
Optimization Problems
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