Lykke, Marianne, Mayela Coto, Christian Jantzen, Sonia Mora, and Niels Vandel. 2016. “Motivating Students Through Positive Learning Experiences: A Comparison of Three Learning Designs for Computer Programming Courses”. Journal of Problem Based Learning in Higher Education 3 (2). https://doi.org/10.5278/ojs.jpblhe.v0i0.1130.