Po-Shen Loh, founderCMU math prof; Nat’l Math Olymp coach
The Interactive Wikipedia
Win-win crowdsourcing:“Best way to learn is to teach”
Coursera, Udacity, edXKhan AcademyMOOC.org, Udemy
Brilliant.orgEducreations, ShowMeGoogle OppiaWikipedia, Quora
Quantity
Quality(Edu.)
The Interactive Wikipedia
Business model:Free + 10x better = Viral growthMonetize through value added services
Validation:2000+ posts / 2000+ monthly uniques
“You've created something unique, and it'sthe most effective, interactive math site I'vecome across.”