RATRI, Yulia; REZEKI, Sri; ANDRIAN, Dedek; ARIAWAN, Rezi. Perangkat Pembelajaran Matematika Menggunakan Model Problem Based Learning pada Materi Sistem Persamaan Linear. Kognitif: Jurnal Riset HOTS Pendidikan Matematika, [S. l.], v. 2, n. 2, p. 94–103, 2022. DOI: 10.51574/kognitif.v2i2.564. Disponível em: https://etdci.org/journal/kognitif/article/view/564. Acesso em: 27 jul. 2025.