LINGNAU, A., HARRER, A., KUHN, M., & HOPPE, H. U. (2007). EMPOWERING TEACHERS TO EVOLVE MEDIA ENRICHED CLASSROOM SCENARIOS. Research and Practice in Technology Enhanced Learning, 2(2), 105–129. Retrieved from https://rptel.apsce.net/index.php/RPTEL/article/view/2007-02005