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七巧板
Author:
周艳玲
GeoGebra
New Resources
GeoGebra数学资源(4-8年级)
第八周作业2
椭圆内切圆链
平行線的判定
湖南省中职数学教师省培(GeoGebra培训案例)
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梯形中線
MeArm機構模擬V.2
完整地球儀
概率与频率关系
纏繞畫2
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Translation
Upper and Lower Sum or Riemann Sum
Means
Square
Matrices