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Choose the most suitable 'improvised units'(中間人)
Author:
Shum Kwok Ching
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
柱體建築師
拼砌四邊形
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
三位數除以一位數（一）
Discover Resources
三角形重心(相關說明)
Roger Test Draw
美國隊長盾牌
S6G2用随机法来估算圆周率Pi
连续开方（制作：谢建华，修订：孟宝兴）
Discover Topics
Cylinder
Integers
Tangent Line or Tangent
Centroid or Barycenter
Hyperbola