This paper presents two case studies focusing on formative evaluation training of novice designers within an online flash development course. The training was designed using experiential learning principles. An online survey was administered to investigate the effectiveness of the instructional design. Although the training enhanced students' understanding of formative evaluation, various challenges were identified and modifications were made to the instructional content and design. A second case study was implemented to verify the effectiveness of the changes and to better understand novice designers' learning. Survey findings supported the effectiveness of modifications. Common themes and challenges in both cases were identified and future changes to the instructional strategies were also proposed.