Small tool to practice integer Addition. Min value is the negative of the max value. Built up to 25. It is useful for factoring fractions and quadratic expressions.

[url=http://forum.geogebra.org/viewtopic.php?f=20&t=42797&p=158133#p158133]Idea implements ccambre answer[/url]

[url=http://forum.geogebra.org/viewtopic.php?f=20&t=42797&p=158133#p158133]Idea implements ccambre answer[/url]