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以「時」和「分」報時 的複本
Author:
黃榮
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
球体的体积推导（优化版）
兩組對邊相等的四邊形
三位數除以一位數（二）
算柱 (兩位數)
画直线等分三角形的面积
Discover Resources
二次函數面積練習
Sequence指令練習(n的平方根)
test
test
简谐振动函数图像
Discover Topics
Rational Numbers
Quadrilaterals
Isosceles Triangles
LCM and GCD
Vectors 2D (Two-Dimensional)