Recommended by Teaching Children Mathematics editorial panel

Motion Math Zoom - http://itunes.apple.com/us/app/motion-math-zoom/id451793073?mt=8

Slice It! - http://itunes.apple.com/us/app/slice-it!-begins/id402143190?mt=8

Rocket Math - http://itunes.apple.com/us/app/rocket-math-free/id408770902?mt=8

Coin Math - http://itunes.apple.com/us/app/coin-math-free/id391297320?mt=8