NINGSIH, Febria; PITRI, Dela Mike; PUTRI, Rahmi. Analysis of Students’ Higher Order Thinking Skills in Solving Open-Ended Problems on the Topic of the System of Linear Equations in Two Variables. MATH-EDU: Jurnal Ilmu Pendidikan Matematika, [S. l.], v. 10, n. 2, p. 147–159, 2025. DOI: 10.32938/jipm.v10i2.6351. Disponível em: http://jurnal.unimor.ac.id/JIPM/article/view/6351. Acesso em: 10 jan. 2026.