This article investigates the effects of a continuing education program in Mathematical Education for early elementary school teachers in Jaguariaíva, Paraná. The research, carried out within the Postgraduate Program in Science and Mathematics Teaching at Lutheran University of Brazil, adopted a qualitative approach, using questionnaires, reports, and observations. The training program, grounded in the National Common Curricular Base (BNCC) and school demands, emphasized playfulness and the use of digital technologies. The results showed positive impacts on teaching practices, including the acquisition of skills for remote teaching during the Covid-19 pandemic. The importance of the BNCC and continuous education to enhance pedagogical practice and the curricular of initial education courses is highlighted.