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拋物線2--焦點法
Author:
16楊杰
GeoGebra
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異分母分數減法
【案例】2018年全国1卷理科12题
找出對稱軸
三位數除以一位數（二）
四邊形的特性
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方格紙上畫菱形3
Circumference 圓周
分數的認識
極座標
區塊斜線教學
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Sine
Ellipse
Plane Figures or Shapes
Parabola
Geometric Transformations