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18以內加法練習
Author:
Tong Wing Hong
GeoGebra
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斐波那契螺旋弧线(表格法)
平行線的判定
异形操场
镂空正方体案例对比
盈利與虧蝕
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優良作品1
任意角的三角函数
单晨制作ggb绘图广东文老师供题
拋物線1--焦點法
正方体展开图的副本
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Similar Triangles
Addition
Plane Figures or Shapes
Parallelogram
Special Points