GÜR, H.; HANGÜL, T. A study on secondary school students’ problem solving strategies. Pegem Journal of Education and Instruction, [S. l.], v. 5, n. 1, p. 95–112, 2015. DOI: 10.14527/pegegog.2015.005. Disponível em: https://www.pegegog.net/index.php/pegegog/article/view/pegegog.2015.005. Acesso em: 21 aug. 2025.