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winter vacation homework 9
Author:
sungsun0808
GeoGebra
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拼砌四邊形
兩位數加法
四邊形的特性
直角坐標平面上的旋轉變換
兩位數除以一位數(一)
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正方形與菱形
了解為何 d(lnx)/dx = 1/x
武陵210數學-三角函數教學使用(1)
Rolling Circle
圆锥曲线的统一画法.许兴华数学
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Quadrilaterals
Parallelogram
Triangles
Perimeter
Real Numbers