The goal of this study is to investigate the nature of student-teachers' learning practices in primary school chemistry classroom contexts. The theoretical approach of this study is based on the sociocultural view of learning and development. Forty university students participated in the study at the at the Department of Educational Sciences and Teacher Education, Oulu University, Finland. This qualitative case study follows a three-step research design: pre-narrative, intervention and post-narrative, in order to highlight the practices involved in teacher learning and development.