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.ted.com/
Free iPad app: https://itunes.apple.com/us/app/ted/id376183339?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/ted/id376183339?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.ted.android
Website: http://www.youtube.com/teachers
Website: https://quizlet.com/
Edmodo app: http://www.edmodo.com/publisher?uid=507204
Free iPhone app: https://itunes.apple.com/us/app/quizlet/id546473125?mt=8&uo=4&at=10l6SU
Google Chrome app: https://chrome.google.com/webstore/detail/quizlet/bgofflgeghkhocbociocnckocbjmomjh
Website: http://flashcardstash.com/
Google Chrome app: https://chrome.google.com/webstore/detail/flashcard-stash/cgopclnilgekngdlkfkegddejocmmmim
Paid iPad app: https://itunes.apple.com/us/app/netters-anatomy-flash-cards/id385415922?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/netters-anatomy-flash-cards/id385415922?mt=8&uo=4&at=10l6SU
Free iPad app: http://itunes.apple.com/us/app/spelling-test/id485279878?ls=1&mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/spelling-test/id485279878?ls=1&mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/motion-math-hd/id410521340?mt=8&uo=4&at=10l6SU
Paid iPhone app: http://itunes.apple.com/us/app/motion-math/id392489333?mt=8&uo=4&at=10l6SU
Edmodo app: http://www.edmodo.com/publisher/motionmath
Paid iPad app: http://itunes.apple.com/us/app/elements-visual-exploration/id364147847?mt=8&uo=4&at=10l6SU
Paid iPad app: http://itunes.apple.com/us/app/britannica-kids-solar-system/id414503873?mt=8&uo=4&at=10l6SU
Paid iPhone app: http://itunes.apple.com/us/app/britannica-kids-solar-system/id414503873?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/chem-pro/id386263255?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.ihelpnyc.chempro
Paid iPad app: https://itunes.apple.com/app/wolfram-planets-reference/id487267819?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/app/wolfram-planets-reference/id487267819?mt=8&uo=4&at=10l6SU
Website: http://www.billnye.com/
Website: http://lessonopoly.org/
Free iPhone app: https://itunes.apple.com/us/app/k12-periodic-table-elements/id480742053?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/k12-periodic-table-elements/id480742053?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/bill-nye-the-science-guy/id652548755?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/bill-nye-the-science-guy/id652548755?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/explore-the-heart-in-3d/id520392909?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/explore-the-heart-in-3d/id520392909?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/3d-brain/id331399332?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/3d-brain/id331399332?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/hudsonalpha-icell/id364882015?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/hudsonalpha-icell/id364882015?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=org.hudsonalpha.icell
Free iPad app: https://itunes.apple.com/us/app/science360-for-ipad/id439928181?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/middle-school-math-6th-grade/id648551920?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/middle-school-math-6th-grade/id648551920?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/mathspace/id586612052?mt=8&uo=4&at=10l6SU
Website: https://mathspace.com.au/
Free iPad app: https://itunes.apple.com/us/app/time-for-kids-family-edition/id550252887?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/constitution-for-ipad/id363287472?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/physicalsci/id510133269?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/middle-school-science-8th/id504081579?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/middle-school-science-8th/id504081579?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/3d-cell-simulation-stain-tool/id381129413?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/chemistry-formula-practice/id422958981?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/chemistry-formula-practice/id422958981?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/chemistry-formula-practice/id422957082?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/chemistry-formula-practice/id422957082?mt=8&uo=4&at=10l6SU
Website: http://bensguide.gpo.gov/
Website: http://teachertube.com/
Website: http://web.wm.edu/hsi/
Website: http://vishub.org/