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operation of matrix
Author:
华杰 苏
Topic:
Matrices
GeoGebra
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判斷球體
直角坐標平面上的旋轉變換
三位數除以一位數（二）
【案例】2018年全国1卷理科12题
四邉形 (四年級) 教師版
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物件的平移概念
柏拉圖立體的"循環節"草2
鉛筆畫圓
題 2
半圆的滚动
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Trigonometry
Statistics
Equations
Geometric Distribution
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