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二年級-柱體的觀察
Author:
chan
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異分母分數減法
畫出對稱圖形
兩組對邊相等和有直角的四邊形
錐體建築師
算柱 (兩位數)
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Transformation of Functions
堆垛
橢圓3--平行四邊形法
基础知识
黄金螺线
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Statistics
Polygons
Step Functions
Rotation
Quadratic Equations