SALSABILAH, Intan Permata; PANGLIPUR, Indah Rahayu; HIDAYATIN, Nur. Application of Double Loop Problem Solving to Improve Mathematical Literacy Skills in Junior High School Students in Learning to Build a Flat Side Space. Journal of Education and Learning Mathematics Research (JELMaR), [S. l.], v. 5, n. 2, p. 97–103, 2024. DOI: 10.37303/jelmar.v5i2.178. Disponível em: https://jelmar.wisnuwardhana.ac.id/index.php/jelmar/article/view/178. Acesso em: 25 aug. 2026.