“The learning science have converged on four major characteristics of effective learning environment: 1- they pose engaging, personally meaningful problems, 2- they allow learners to build on their existing knowledge,3- they are social experiences that blur boundaries between student and teacher, and 4- they constantly assess student learning, enabling the learning environment and the student themselves to make adjustments” (Bransford, 2000).

DiGiano, Ch., Goldman, Sh., Chorost, M. (2009).  Educating Learning Technology Designers: Guiding and Inspiring Creators of Innovative Educational Tools. New York, NY: Routledge.