The article “The Transformative Role of Peer Learning Projects in 21st Century Schools—Achievements from Five Portuguese Educational Institutions” by Ana Raquel Carvalho and Carlos Santos has been
published in Education Sciences as part of the Special Issue Cooperative/Collaborative Learning and is available online:

Abstract: https://www.mdpi.com/2227-7102/11/5/196
HTML Version: https://www.mdpi.com/2227-7102/11/5/196/htm
PDF Version: https://www.mdpi.com/2227-7102/11/5/196/pdf
Special Issue:
https://www.mdpi.com/journal/education/special_issues/cooperative_learning