This article presents a summary of the results from phase 1 of a two-phase research project. Drawing on the principles of problem-based learning (PBL), the aims of phase 1 were to design, develop and evaluate a set of flexible online teaching resources for use within a virtual learning environment. Participants in the project (n = 10) were volunteers from students registered on a two-year distance education programme of study for specialist teachers of children with visual impairment. Two case scenarios were developed for the project, each of which was based around a fictitious support service for teachers of children with visual impairment. Following a campus-based study day, the participants were assigned to one of two "PBL Activity Groups" and completed a series of tasks within each case scenario. Participation in the project was supported by members of the Project Team over a period of one semester, following which participants were asked to provide feedback through an online questionnaire. A summary of the feedback is presented, and key findings discussed. The results suggest that, with appropriate resources, adequate preparatory training and effective tutor support, online PBL can be an effective method for supplementing the continuing professional development of specialist teachers studying through distance education. (Contains 4 tables, 1 figure, and 1 note.)