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Homework3
Author:
1041015楊山佩
GeoGebra
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球体的体积推导
拼砌四邊形
三位數除以一位數(二)
【案例】2013年安徽高考15题
異分母分數減法
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旋轉動畫
QP3.18
JAY三角
四下_面積(一)(教師版)
椭圆内反射
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Terms
Subtraction
Combinatorics
Rectangle
Linear Functions