Informal math coaching by instant messaging: Two case studies of how university students coach K-12 students

Stefan Hrastinski, Anneli Edman, Fredrik Andersson, Tanvir Kawnine, Carol-Ann Soames. Informal math coaching by instant messaging: Two case studies of how university students coach K-12 students. Interactive Learning Environments, 22(1):84-96, 2014. [doi]