Nouri, J. et al. 2017. Assessing Collaborative Problem Solving Skills in Technology-Enhanced Learning Environments – The PISA Framework and Modes of Communication. International Journal of Emerging Technologies in Learning (iJET). 12, 04 (Apr. 2017), pp. 163–174. DOI:https://doi.org/10.3991/ijet.v12i04.6737.