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hkdse 2014 by mr lo wy
Author:
tcchan
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
算柱 (兩位數)
四邉形 (四年級) 教師版
三位數除以一位數（二）
Discover Resources
柱體建築師 2
concurrence of medians and bimedians of tetrahedron
國旗製作
重心三等分三角形
公平的切蛋糕 Selfridge-Conway 免嫉妒分法(envy-free cake-cutting)