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時鐘
Author:
戴宇宏
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
【案例】2018年全国1卷理科12题
異分母分數減法
拼砌四邊形
画直线等分三角形的面积
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指數函數與二次函數101.11.26
函數圖形的變化（Ⅱ）
向量加法
等角作圖
Copy of 平行四邊形
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Equations
Difference and Slope
Straight Lines
Statistical Characteristics
Secant Line or Secant