Paid iPad app: https://itunes.apple.com/app/wolframalpha/id334989259?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/app/wolframalpha/id334989259?mt=8&uo=4&at=10l6SU
Paid Android Phone app: https://play.google.com/store/apps/details?id=com.wolfram.android.alpha
Paid Android Tablet app: https://play.google.com/store/apps/details?id=com.wolfram.android.alpha
Website: http://www.instagrok.com/
Free iPad app: https://itunes.apple.com/us/app/instagrok/id777873941?mt=8&uo=4&at=10l6SU
Google Apps for Education app: https://www.google.com/enterprise/marketplace/viewListing?productListingId=17789+13349884249762973052
Google Chrome app: https://chrome.google.com/webstore/detail/instagrok/flonaffkffjppejcafgpdgilebfikemd
Edmodo app: http://www.edmodo.com/publisher?uid=7493337
Paid iPad app: https://itunes.apple.com/us/app/national-geographic-world/id364733950?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/national-geographic-world/id364733950?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/scientific-graphing-calculator/id369480853?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/scientific-graphing-calculator/id369480853?mt=8&uo=4&at=10l6SU
Google Chrome app: https://chrome.google.com/webstore/detail/bhdheahnajobgndecdbggfmcojekgdko
Website: https://www.desmos.com/
Edmodo app: http://www.edmodo.com/publisher?uid=3382251
Free iPad app: https://itunes.apple.com/us/app/graphing-calculator-by-desmos/id653517540?mt=8&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/graphing-calculator-by-desmos/id653517540?mt=8&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.desmos.calculator
Free Android Tablet app: https://play.google.com/store/apps/details?id=com.desmos.calculator
Website: http://dkfindout.com/
Free Android Phone app: https://play.google.com/store/apps/details?id=com.brainpop.brainpopfeaturedmovieandroid
Google Apps for Education app: https://www.google.com/enterprise/marketplace/viewListing?productListingId=8006+9291735389906767602
Free iPad app: http://itunes.apple.com/us/app/brainpop-featured-movie/id364894352?mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/brainpop-featured-movie/id364894352?mt=8&uo=4&at=10l6SU
Website: http://www.brainpop.com/
Google Chrome app: https://chrome.google.com/webstore/detail/brainpop-featured-movie/cdikkckjinnmjpgkjjpnfmmbcpbhmklf
Website: http://www.ck12.org/
Free Android Phone app: https://play.google.com/store/apps/details?id=org.ck12.app.practice
Free Android Tablet app: https://play.google.com/store/apps/details?id=org.ck12.app.practice
Google Chrome app: https://chrome.google.com/webstore/detail/ck-12/ilmbnmigihncgeckjgmkehcgkdeohkhl
Free iPad app: https://itunes.apple.com/us/app/ck-12-free-fun-way-to-learn/id909343639?mt=8&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/ck-12-free-fun-way-to-learn/id909343639?mt=8&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/gizmos/id692838319?mt=8&uo=4&at=10l6SU
Website: http://www.billnye.com/
Paid iPad app: http://itunes.apple.com/us/app/elements-visual-exploration/id364147847?mt=8&uo=4&at=10l6SU
Website: http://scholar.google.com/
Website: http://kids.nationalgeographic.com/
Website: http://www.jstor.org/
Free iPad app: http://itunes.apple.com/us/app/ted-books/id511071050?ls=1&mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/ted-books/id511071050?ls=1&mt=8&uo=4&at=10l6SU
Website: http://www.tbcjr.com/
Website: http://mackinvia.com
Free iPad app: http://itunes.apple.com/us/app/destiny-quest/id472689459?mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/destiny-quest/id472689459?mt=8&uo=4&at=10l6SU
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/
Free iPad app: http://itunes.apple.com/us/app/itunes-u/id490217893?ls=1&mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/itunes-u/id490217893?ls=1&mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/watchknow-educational-videos/id423622049?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/watchknow-educational-videos/id423622049?mt=8&uo=4&at=10l6SU
Website: http://www.watchknowlearn.org/
Website: http://www.discoveryeducation.com/
Free iPad app: https://itunes.apple.com/us/app/reading-rainbow/id512350210?mt=8&uo=4&at=10l6SU
Website: http://www.sweetsearch.com/
Website: http://dp.la/
Free iPad app: https://itunes.apple.com/us/app/icdl-free-books-for-children/id363731638?mt=8&uo=4&at=10l6SU
Website: http://www.childrenslibrary.org/
Website: http://www.tumblebooks.com/library/asp/about_tumblebooks.asp
Paid Mac program: http://www.tumblebooks.com/library/asp/TBUNPLUGGED_faq.asp
Paid Windows program: http://www.tumblebooks.com/library/asp/TBUNPLUGGED_faq.asp