Free Android Phone app: https://play.google.com/store/apps/details?id=com.socrative.student
Free iPad app: https://itunes.apple.com/app/student-clicker-socrative/id477618130?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/app/student-clicker-socrative/id477618130?mt=8&uo=4&at=10l6SU
Website: http://www.socrative.com/
Edmodo app: http://www.edmodo.com/publisher/socrative
Google Chrome app: https://chrome.google.com/webstore/detail/socrative-student/nblhpecglllndfihipmpdoikimcmgkha
Website: http://makezine.com/
Website: http://diy.org/
Free iPhone app: https://itunes.apple.com/us/app/diy.org/id519308960?mt=8&uo=4&at=10l6SU
Website: http://makeitatyourlibrary.org/
Physical product: http://www.makeymakey.com/
Physical product: https://littlebits.com/
Physical product: http://www.raspberrypi.org/
Free Mac program: http://arduino.cc/en/Main/Software
Free Windows program: http://arduino.cc/en/Main/Software
Physical product: http://www.arduino.cc/
Physical product: http://www.hummingbirdkit.com/
Website: https://www.tinkercad.com/