Same as the math one but with Social Studies.
Paid Android Phone app: https://play.google.com/store/apps/details?id=com.enovatemedia.stateswipe
Free Android Phone app: https://play.google.com/store/apps/details?id=com.enovatemedia.stateswipelite
Paid iPhone app: https://itunes.apple.com/us/app/state-swipe/id654022988?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/state-swipe/id654022988?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/state-swipe-lite/id657065154?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/state-swipe-lite/id657065154?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.zondle.mobile
Free iPad app: https://itunes.apple.com/us/app/zondle/id497342127?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/zondle/id497342127?mt=8&uo=4&at=10l6SU
Website: http://www.zondle.com/
Edmodo app: http://www.edmodo.com/publisher/zondle
Website: http://museu.ms/
Free iPad app: https://itunes.apple.com/us/app/museums-of-the-world/id546315167?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/museums-of-the-world/id546315167?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=si.semantika.museums.global
Free Windows program: http://apps.microsoft.com/windows/sl-si/app/cf982044-52dc-4d3a-bb1c-640fdcf7a258
Free Android Tablet app: https://play.google.com/store/apps/details?id=si.semantika.museums.global
Website: http://quiz.quipper.com/
Free iPad app: https://itunes.apple.com/us/app/quipper-quiz/id432308428?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/quipper-quiz/id432308428?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.quipper.a.quiz
Paid iPad app: http://itunes.apple.com/us/app/stack-the-states/id381342267?mt=8&uo=4&at=10l6SU
Paid iPhone app: http://itunes.apple.com/us/app/stack-the-states/id381342267?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/au/app/stack-the-countries-lite/id407838751?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/stack-the-countries/id407838198?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/au/app/stack-the-countries-lite/id407838751?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/stack-the-countries/id407838198?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/news-o-matic-daily-reading/id578023255?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/news-o-matic-daily-reading/id578023255?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/wilderquest-nature-discovery/id512907623?mt=8&uo=4&at=10l6SU
Website: http://www.wilderquest.nsw.gov.au/
Free iPad app: https://itunes.apple.com/US/app/id550965686?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/US/app/id550965686?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/presidents-vs.-aliens-lite/id427421823?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/presidents-vs.-aliens/id427418941?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/presidents-vs.-aliens-lite/id427421823?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/presidents-vs.-aliens/id427418941?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/todays-document/id412969819?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/todays-document/id412969819?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
Website: http://tripline.net/
Free iPad app: https://itunes.apple.com/us/app/tripline/id417133912?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/tripline/id417133912?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/mycongress/id364897048?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/rwt-timeline/id724817238?mt=8&uo=4&at=10l6SU