Only spend what you can afford.An optimization experience with high school students. Advances of Research in Mathematics Education, [S. l.], n. 2, p. 71–85, 2012. DOI: 10.35763/aiem.v1i2.26. Disponível em: https://aiem.es/aiem/article/view/3800. Acesso em: 20 may. 2026.