One of the most incredible MOOC’s ever created, khanacademy.org is a completely free K-12 (and beyond) online education on everything from astronomy to politics. This tool brings an elegant approach that encourages everyone to excel, even bringing a gamification element so that the more you learn and listen, the more you “level up”, both literally and figuretively. Playing and learning at the same time?! Brilliant! We’re officially addicted. Khan Academy: “You can learn ANYTHING!” Find the site right here!