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GeoGebra
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球體建築師
兩組對邊相等的四邊形
兩位數除以一位數（二）
兩位數加法
畫出對稱圖形
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滾出直線滾出直線
地科模型–日照長短
蛇形排数
网易
半椭圆面积的定积分动态演示.许兴华数学
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Continuity
Cuboid
Geometric Transformations
Rhombus
Logic