Abstract From the production about the Context Evaluation on Child Education and the research experience in this field, this text presents and discusses a qualitative research about the evaluation of play at a child education institution in Curitiba. It was proposed and realized an internal evaluation course, participatory and formative with the faculty, coordination, direction and pedagogical advice, of an educational institution for children, since babies, from 4 months to 5 years and eleven months. Part of this process was the ad hoc construction of an instrument that served as a support for the reflections and discussions, in group, aiming at “protagonist participation”. There was an increase in awareness of the individual and collective perspectives on the play. The collective construction of the instrument from a research process allowed the deepening of concepts related to the theme, consisting of a process of singular continuous formation.