Free iPad app: https://itunes.apple.com/ca/app/virtual-manipulatives!/id471341079?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/geoboard-by-math-learning/id519896952?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/geoboard-by-math-learning/id519896952?mt=8&uo=4&at=10l6SU
Website: http://www.mathlearningcenter.org/web-apps/geoboard/
Google Chrome app: https://chrome.google.com/webstore/detail/geoboard-by-the-math-lear/gaakmmdiopnmcenkojohldanladpajak
Free iPad app: https://itunes.apple.com/us/app/number-pieces-by-math-learning/id605433778?mt=8&uo=4&at=10l6SU
Google Chrome app: https://chrome.google.com/webstore/detail/number-pieces-by-the-math/fhcpnppigjdhghbohcbogmmhmfkobgbm
Website: http://www.mathlearningcenter.org/web-apps/number-pieces/
Free iPad app: http://itunes.apple.com/us/app/fractions-by-brainingcamp/id471353363?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/pattern-blocks-by-brainingcamp/id485065679?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/geometry-pad/id517461177?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/number-line/id319589184?mt=8&uo=4&at=10l6SU