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優良作品2(怡雯)
Author:
Ching-Hui Chou
GeoGebra
New Resources
第八周作业
四邉形 (四年級) 教師版
Earth with coastline
Nested spiral octagon
近似值：有效數字
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Add and subtract 2
Is this a prism 8
盾牌~~~~
平移
全等三角形
Discover Topics
Standard Deviation
Conic Sections
Intersection
Scalene Triangles
Upper and Lower Sum or Riemann Sum