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Author:
宋晓燕
GeoGebra
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平行線的判定
GeoGebra数学资源(4-8年级)
斐波那契螺旋弧线(表格法-可动态调节)
龙形曲线-分形龙2
镂空正方体案例对比
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柱體建築師 2
活動工作紙LEVEL02
St. Line
A的影响
第八周作业1
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Terms
Right Triangles
Scalene Triangles
Polygons
Angles