KIRANA, Anik; KHOLIFAH, Siti. Approach Higher Order Thinking-Problem Based Learning in Learning Mathematics Material Linear Equations Absolute Value One Variable. INNOVATION RESEARCH JOURNAL, [S. l.], v. 1, n. 1, p. 20–28, 2020. DOI: 10.30587/innovation.v1i1.1188. Disponível em: https://journal.umg.ac.id/index.php/innovation/article/view/1188. Acesso em: 31 may. 2025.