Website: http://illuminations.nctm.org/ActivityDetail.aspx?ID=207
Free iPad app: https://itunes.apple.com/us/app/deep-sea-duel/id547246887?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/deep-sea-duel/id547246887?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=air.AndroidPublish
Free iPad app: https://itunes.apple.com/us/app/lobster-diver-hd/id416610863?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/chicken-coop-fractions-game/id484561886?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/chicken-coop-fractions-game/id484561886?mt=8&uo=4&at=10l6SU
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-rack-by-math-learning/id496057949?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/number-rack-by-math-learning/id496057949?mt=8&uo=4&at=10l6SU
Google Chrome app: https://chrome.google.com/webstore/detail/number-rack-by-the-math-l/pdblapgbfbphhldogcijidlkbcgokfkc
Website: http://www.mathlearningcenter.org/web-apps/number-rack/
Website: http://www.khanacademy.org/
Free iPad app: https://itunes.apple.com/us/app/id469863705?mt=8&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/id469863705?mt=8&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=org.khanacademy.android
Free Android Tablet app: https://play.google.com/store/apps/details?id=org.khanacademy.android
Edmodo app: https://spotlight.edmodo.com/product/khan-academy,324527/
Website: http://www.sumdog.com/
Free iPad app: http://itunes.apple.com/us/app/motion-math-hungry-fish/id483049169?mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/motion-math-hungry-fish/id483049169?mt=8&uo=4&at=10l6SU
Website: http://learnzillion.com/
Website: http://www.ixl.com/