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perimeter
Author:
cheng JJ
,
Tim Brzezinski
,
Steve Phelps
GeoGebra
GeoGebra
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斐波那契螺旋弧线(表格法)
科赫雪花
第八周作业3
第八周作业
GeoGebra数学资源(4-8年级)
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I love you
旋轉一物件02
科學記號
四次函數圖形
面積與周界活動
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Tangent Function
Cube
Line Segment
Sine
Angles