MARTÍN-GARCÍA, J.; DIES ÁLVAREZ, M. E. Secondary school teachers’ perceived difficulties in the development of non-formal scientific activities. Investigations in Science Education, [S. l.], v. 27, n. 3, p. 96–111, 2022. DOI: 10.22600/1518-8795.ienci2022v27n3p96. Disponível em: https://ienci.if.ufrgs.br/index.php/ienci/article/view/2935. Acesso em: 3 jul. 2024.