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01:17 2016_5_20_Compass1-ElevatorPitch-JunlongLi-junlli… 2016_5_20_Compass1-ElevatorPitch-JunlongLi-junlli (upload 5/20)	2016_5_20_Compass1-ElevatorPitch-JunlongLi-junlli (upload 5/20) k-6 children business economics education university & college students cognition education education and upbringing primary education (elementary & middle school) elementary school teachers problem solving elementary and high schools schools education programme elementary and middle school mechanical caption From Junlong Li 3 plays 0