This study develops a collaborative learning methodology for reusing waste generated in academia, without compromising learning objectives, while fostering environmental awareness in students. The methodology applied is divided into five sections: 1) identification of university courses that generate waste, 2) technical feasibility assessment for reusing generated waste, 3) intervention proposal design, 4) methodology’s implementation, and 5) methodology’s evaluation. The results show that collaborative learning allows first-year students to learn from the experience and knowledge of last-year students, promoting an increased and more adequate cognitive load than that of individual learning. In addition, 80% of the waste generated in practical teaching activities was reused. It is conclude that the methodology implemented here contributed to the creation of student awareness about environmental issues (waste) that students may face throughout their professional careers.