HUTAJULU, M.; SOFIAH, A. A.; RUSTELLA, F. .; SYAHPITRI, D. .; PUTRI, A. S. R. .; HARIANTI, A. Comparison of Student Learning Outcomes Using Class Action Research To Improve Mathematics Problem Solving Ability. Mathline : Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 8, n. 2, p. 533–544, 2023. DOI: 10.31943/mathline.v8i2.374. Disponível em: https://mathline.unwir.ac.id/index.php/Mathline/article/view/374. Acesso em: 10 mar. 2025.