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24时计时法时钟
Author:
刘文明
Topic:
Constructions
,
Mathematics
GeoGebra
New Resources
撒针估算面积实验
第八周作业1
第八周作业2
平行線的判定
GeoGebra数学资源(4-8年级)
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線段與角度的裝飾
模擬圓規
小遊戲
gltzk 長方體表面的最短距離
达芬奇椭圆仪
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Inequalities
Parametric Curves
Ratios
Trapezoid
Step Functions