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news
Joined: 23 Apr 2007
Posts: 126360
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Independent developer Esa Helttula today released a new educational math app Trade-First Subtraction 1.0 for iPhone and iPod touch. It is the first Everyday Math app in the iTunes App Store. The app can be used to teach and study the trade-first subtraction method.
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ivy00135
Joined: 06 Nov 2012
Posts: 49808
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