The significant quality increase in open-source e-learning platforms allows for large-scale e-learning courses with significantly reduced costs. This document describes a pedagogical model enhanced for effectively providing courses to a large number of students and producing media-rich content suitable to be managed by the open-source e-learning platform .LRN. Two case studies are presented: 1) a course for high school students to increase the popularity of engineering degrees; and 2) a regular engineering course with a blended learning approach. In both cases the proposed paradigm allowed the creation of successful learning experiences impossible with conventional teaching methodologies and tools.