2022-08-012022-08-012020-08PARENTE, Andrela Garibaldi Loureiro; ALVES, José Moysés; BEZERRA, Sérgio Henrique de Oliveira. Densidade e força de empuxo: imaginação e produção de um recurso didático. REAMEC - Rede Amazônica de Educação em Ciências e Matemática, online, v. 8, n. 2, p. 793-816, maio/ago. 2020. DOI: https://doi.org/10.26571/reamec.v8i2.10235. Disponível em: http://repositorio.ufpa.br:8080/jspui/handle/2011/14554. Acesso em:.2318-6674https://repositorio.ufpa.br/handle/2011/14554In this article, we present a biographical (auto) formative research on the role of imagination in the activity of a teacher, during the production of a didactic resource, to teach the concepts of density and buoyancy. From the field text, describing the initial motivation and the creation process, we carried out the analytical-interpretive process, inspired by narrative research, to elaborate the biography of the resource's production path. The biography contains the interpretation of the process by explaining the guiding principles of the production path of the didactic resource. We conclude that the production of the resource and, especially, the reflection on the process of its production, are moments of learning and training for the teacher, due to the possibilities of theorizing about the problems, solving them and proposing practical solutions to them. This narrative has the potential to contribute to the area of science education, inspiring the creation of new teaching materials, other research on the production pathways and strengthening spaces for sharing teachers' biographies, which value the personalization of teaching.Acesso Abertohttps://creativecommons.org/licenses/by-nc/4.0/ImaginaçãoRecurso didáticoEnsino de ciênciasImaginationDidactic resourceScience teachingArtigo de Periódico10.26571/reamec.v8i2.10235