This research presents results obtained from a partnership between a veteran teacher, a teacher-to-be and the researcher, who acted as the mediator. The 'knowledge base of teaching' by Lee Shulman was the reference for analysis and the context, within which data was collected, and included the elaboration, implementation and analyses of a series of Natural Sciences Classes for the lower grades of Elementary School. The results point out that putting teachers together does not ensure complete or even partial exchange of knowledge, because teachers´ needs and the way they interpret and focus on their professional practice depend on their professional momentum.
Teacher education; Unexperienced teacher; Experienced teacher; 'Knowledge base of teaching'; Science teaching