 RoboTutor is an integrated collection of intelligent tutors and educational games implemented on an Android tablet, and is now being field-tested in Tanzania.Project LISTEN was led by (now Emeritus) Professor David 'Jack' Mostow, who currently leads Carnegie Mellon's "RoboTutor" team in the Global Learning XPRIZE competition.Project LISTEN was supported by the Defense Advanced Research Projects Agency through DARPA Order 5167, the National Science Foundation under ITR/IERI Grant No.