Κasimatis, Κaterina, Kouloumpis, D. and Papageorgiou, T. 2019. Cultivation of 21st-century skills: Creating and implementing rubrics for assessing projects. New Trends and Issues Proceedings on Humanities and Social Sciences. 6, 7 (Dec. 2019), 180–188. DOI:https://doi.org/10.18844/prosoc.v6i7.4526.