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三角四星
Author:
吳秉沂
GeoGebra
New Resources
拼砌四邊形
球體建築師
長方體平面投影 (Codex版)
Fibonacci Clock
第八周作业
Discover Resources
方根化簡2
角速度概念
同心圓和線段-2(最外圓大小固定)
二項分佈的副本
运动变化的二次函数图象.许兴华数学
Discover Topics
Division
Correlation
Set Theory
Reflection
Numbers