There is a need to organize non-formal learning activities in mathematics for children and youth. In Finland, we are developing a new non-formal learning environment called Pulmaario where we use peer tutors as instructors. This study is the empirical problem analysis of the design-based research. The aim was to find out what kind of support the instructors of the Pulmaario learning environment felt they need. The research material (N=51) was collected with questionnaires. The analysis of the questionnaires was based on the method of inductive content analysis. The results shows the needs for developing the non-formal learning environment further.Non peer reviewe
