HANDAYANI, I. Usage Model Method to Improving Mathematical Problem Solving Ability of Elementary School Students. Jurnal Inovasi Pendidikan Dasar, [S. l.], v. 1, n. 1, p. 1–8, 2015. DOI: 10.22236/jipd.v1i1.4479. Disponível em: https://journal.uhamka.ac.id/index.php/jipd/article/view/4479. Acesso em: 5 nov. 2024.