NORAINI, Ani; PUTRI, Anggita Oktaviana. Analysis of students’ critical thinking ability in solving open-ended problems in arithmetic sequences. Journal Focus Action of Research Mathematic (Factor M), [S. l.], v. 8, n. 1, p. 81–96, 2025. DOI: 10.30762/f_m.v8i1.4780. Disponível em: https://jurnalfaktarbiyah.iainkediri.ac.id/index.php/factorm/article/view/env8n1_p81_96. Acesso em: 7 sep. 2026.