Adding flexibility to the learning process, mobile learning offers great opportunities for education, especially for teenagers, who show great attentiveness to mobile technologies. Thus, the need to focus on design aspects of such learning is growing. This study aims to reveal critical issues in designing mobile learning based on a program for 11th graders and to unfold students' perceptions about reasons for participation, satisfaction, implementation processes, and specific content representation types. Reflections on insights gleaned from the instructional design process of the project and students' perceptions are presented with related recommendations. (C) 2011 Elsevier Ltd. All rights reserved.