PERTIWI, M.; YSH, A. S.; ARTHARINA, F. P. Implementasi Model Problem Based Learning Berbantu Lego dalam Meningkatkan Hasil Belajar Matematika SD. International Journal of Elementary Education, [S. l.], v. 3, n. 2, p. 210–217, 2019. DOI: 10.23887/ijee.v3i2.18530. Disponível em: https://ejournal.undiksha.ac.id/index.php/IJEE/article/view/18530. Acesso em: 27 apr. 2024.