The next web
8. December 2011
online article inThe Next Web | Insider, Dec. 6th, 2011:
http://thenextweb.com/insider/2011/12/06/play-ludwig-teaches-students-physics-in-a-brilliant-interactive-game/
online article inThe Next Web | Insider, Dec. 6th, 2011:
http://thenextweb.com/insider/2011/12/06/play-ludwig-teaches-students-physics-in-a-brilliant-interactive-game/
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