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百分數（小學）：折扣 / 賺賠（HTML5 版）
Author:
GeoGebra Institute of Hong Kong
,
Anthony OR 柯志明
English version:
64151 Percentages: Selling Problems
GeoGebra
New Resources
四邊形的特性
兩組對邊相等的四邊形
三位數除以一位數（一）
sanjiaohanshu
判斷球體
Discover Resources
測試: f(x)=sin(ax)+b 練習
餘弦定理修正項及風車證明
六年級_正方體截面
繪本
不存在的梯子
Discover Topics
Pie Chart or Circle Chart
Set Theory
Frequency Distribution
Vectors
Boxplot