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一組物件的幾分之幾（練習）
Author:
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GeoGebra
New Resources
算柱 (兩位數)
兩位數除以一位數（一）
兩位數加法
【案例】2018年全国1卷理科12题
異分母分數減法
Discover Resources
謝爾賓斯三角形
Ambiguous Cylinder illusion
Football Puzzle - 直線盤球
數學繪圖
等差数列、等比数列
Discover Topics
Logarithm
Standard Deviation
Right Triangles
General Quadrilateral
Bar Chart or Bar Graph