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阿氏圆（绘本团队）
Author:
刘护灵
GeoGebra
New Resources
畫出對稱圖形
找出對稱軸
第八周作业
球體建築師
拼砌四邊形
Discover Resources
分數除法4: 1 ÷ a/b (包含)
謝爾賓斯基三角形(Sierpinsky)
分段移動
國旗
中位线的副本
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Numbers
Random Experiments
Perimeter
Fractions
Functions