Programming, datalogging
Free Mac program: http://arduino.cc/en/Main/Software
Free Windows program: http://arduino.cc/en/Main/Software
Physical product: http://www.arduino.cc/
Free Windows program: http://www.alice.org/kelleher/storytelling/download.html
Free Mac program: http://www.alice.org/
Free Windows program: http://www.alice.org/
Free Windows program: http://www.phrogram.com/
Free iPad app: https://itunes.apple.com/us/app/codecademy-hour-of-code/id762950096?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/codecademy-hour-of-code/id762950096?mt=8&uo=4&at=10l6SU
Website: http://stackoverflow.com/
Website: http://codehs.com/
Free iPad app: https://itunes.apple.com/us/app/dataanalysis/id375603883?mt=8&uo=4&at=10l6SU
Free iPad app: https://itunes.apple.com/us/app/gamepress-create-share-play./id637370800?mt=8&uo=4&at=10l6SU
Paid iPad app: https://itunes.apple.com/us/app/hands-on-equations-1-fun-way/id505948222?mt=8&uo=4&at=10l6SU
Paid iPhone app: https://itunes.apple.com/us/app/hands-on-equations-1-fun-way/id505948222?mt=8&uo=4&at=10l6SU
Physical product: http://www.makeymakey.com/
Website: http://www.tynker.com/
Free iPad app: https://itunes.apple.com/us/app/tynker-learn-programming-visual/id805869467?mt=8&uo=4&at=10l6SU
Website: http://www.riversidepublishing.com/products/DataDirector/
Paid iPad app: http://itunes.apple.com/us/app/vocab-a-splat/id517271626?ls=1&mt=8&uo=4&at=10l6SU
Website: http://www.gigabryte.com/
Physical product: http://www.raspberrypi.org/