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In this paper, we propose two discussions about mathematics in service courses, one related to problematizing practices that enlarge the perspective of problem-solving not only about solving given problems, but also of inventing new techniques and new forms of life, and another about the teaching activity focused on forms of action and not only on content. We did all discussions through excerpt of interviews made with electronic engineers working in different Petrobras’ business areas. Through them, we exhibited different ways of viewing mathematics in the professional world and the relationships between mathematics at work and in university education.

Como as Entrevistas com Engenheiros Eletrônicos da Petrobras nos Ajudam a Pensar Matemática nos Cursos de Serviço