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螢橋國中
GeoGebra
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比較五件物件的重量
龙形曲线-分形龙
椭圆内切圆链
撒针估算面积实验
第三周作业效果演示
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雜類(Miscellaneous)
橢圓
trigo ratios np2c
Math Project
黃金三角形 62326 劉虹圻
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Similar Triangles
Square
Angles
Arithmetic Operations
Subtraction