Free iPad app: https://itunes.apple.com/us/app/encyclop-dia-britannica/id447919187?mt=8&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/encyclop-dia-britannica/id447919187?mt=8&at=10l6SU
Website: https://www.britannica.com/
Website: http://duckduckgo.com/
Google Chrome app: https://chrome.google.com/webstore/detail/duckduckgo-home-page/ljkalbbbffedallekgkdheknngopfhif
Free iPad app: https://itunes.apple.com/us/app/duckduckgo-privacy-browser/id663592361?mt=8&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/duckduckgo-privacy-browser/id663592361?mt=8&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.duckduckgo.mobile.android
Free Android Tablet app: https://play.google.com/store/apps/details?id=com.duckduckgo.mobile.android
Free iPad app: https://itunes.apple.com/us/app/rover-browser-for-education/id483262612?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/puffin-web-browser/id406239138?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/puffin-web-browser/id406239138?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.cloudmosa.puffinFree
Paid Android Phone app: https://play.google.com/store/apps/details?id=com.cloudmosa.puffin
Free iPhone app: https://itunes.apple.com/us/app/puffin-web-browser-free/id472937654?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/puffin-web-browser-free/id472937654?mt=8&uo=4&at=10l6SU
Free Android Tablet app: https://play.google.com/store/apps/details?id=com.cloudmosa.puffinFree
Paid Android Tablet app: https://play.google.com/store/apps/details?id=com.cloudmosa.puffin
Website: http://www.nationalgeographic.com/
Website: http://www.youtube.com/education
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://worldbookonline.com/
Free Android Phone app: https://play.google.com/store/apps/details?id=com.zite
Free iPad app: http://itunes.apple.com/us/app/zite/id419752338?mt=8&ls=1&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/zite/id419752338?mt=8&ls=1&uo=4&at=10l6SU
Free Mac program: http://www.polleverywhere.com/macpresenter
Website: http://www.polleverywhere.com/
Free iPad app: https://itunes.apple.com/us/app/google-earth/id293622097?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/google-earth/id293622097?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.google.earth
Free Mac program: http://www.google.com/earth/download/
Free Windows program: http://www.google.com/earth/download/
Google Chrome app: http://www.google.com/earth/explore/products/plugin.html
Mozilla Firefox extension: http://www.google.com/earth/explore/products/plugin.html
Apple Safari extension: http://www.google.com/earth/explore/products/plugin.html
Website: https://www.google.com/
Free iPad app: https://itunes.apple.com/us/app/google-search/id284815942?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/google-search/id284815942?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.google.android.googlequicksearchbox
Google Chrome app: https://chrome.google.com/webstore/detail/google-search/coobgpohoikkiipiblmjeljniedjpjpf
Website: http://www.youtube.com/schools
Website: http://www.kidrex.org/
Paid iPad app: https://itunes.apple.com/app/wolfram-words-reference-app/id466457576?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/app/wolfram-words-reference-app/id466457576?mt=8&uo=4&at=10l6SU
Website: http://www.reference.com/
Google Chrome app: https://chrome.google.com/webstore/detail/referencecom/ooffafbjcjgjinobbfdgkefebeiodngk
Free iPad app: http://itunes.apple.com/us/app/accessmylibrary-school-edition/id371676736?mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/accessmylibrary-school-edition/id371676736?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.cengage.mobile.amlschooledition.android
Website: http://www.zotero.org/
Paid Mac program: http://www.zotero.org/
Paid Windows program: http://www.zotero.org/