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Captain America
Author:
彭宇辰
GeoGebra
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異分母分數減法
三位數除以一位數(一)
【案例】2013年安徽高考15题
球体的体积推导
球体的体积推导(优化版)
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相似圖形基本概念
樞紐實驗
弹簧变化
正方体展开图的副本
選修數學
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Exponent
Trigonometry
Special Points
Cone
Reflection