Splaysoft, LLC has an iPhone/iPad App called Common Core Look Fors that helps educators integrate the Common Core State Standards into their classroom. The app covers Mathematics, Technology, English Language Arts. ELA was recently updated. This App costs $2.99 and is compatible with iPhone, iPod touch, and iPad.Requires iOS 5.0 or later.
I like this one because it comprehesively includes Math, Tech, and ELA as opposed to others which treat each subject separately.
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Which common core apps do you favor?