., Sukoco; NENGAH PARTA, I; PUSPITASARI, Lila. Efforts to Build Students’ Mathematical Problem-solving Ability Through Problem-based Learning Models on Number Operation Materials in Class VII SMPN 25 Malang. KnE Social Sciences, [S. l.], v. 8, n. 10, p. 309–317, 2023. DOI: 10.18502/kss.v8i10.13456. Disponível em: https://knepublishing.com/index.php/KnE-Social/article/view/13456. Acesso em: 2 dec. 2025.