The purpose of this study is to investigate the changes in three beginning teachers’ visions during their first year in the profession. A multiple case study was conducted for in-depth analysis of the changes in three beginning teachers' visions. Data were collected from three volunteer purposefully chosen beginning teachers through individual interviews, classroom observations and open-ended questionnaires during a schooling year. Each participant was initially specified as separate cases and content analysis was used to analyse the data from each case. Then a cross-case analysis was conducted to compare the changes in each participant’s teacher visions. The results indicate that several changes appear in participants’ overall teacher visions, professional understanding, conceptual and practical tools, practices and dispositions throughout their first year teaching experience.