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Introduction of pH
Author:
Alex CHIK
GeoGebra
http://www.geogebra.hk
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算柱 (兩位數)
第八周作业
近似值：有效數字
兩位數除以一位數（一）
異分母分數減法
Discover Resources
複合棒形圖: 圖一
funny draw
二次函數05
example 3
三心
Discover Topics
Standard Deviation
Terms
Pie Chart or Circle Chart
Fractions
Kite