Duolingo - a web based language learning system - 0 views
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Seb Schmoller on 12 May 13Worth checking for a pretty nifty way to learn a language. Lots of interactivity; personalised; and with absolutely no explanations. For how it works and its business model see this 16 minute talk by its inventor https://www.solveforx.com/moonshots/massive-scale-online-collaboration.