ASTUTI, Widi; WIJAYA, Ariyadi. Learning trajectory berbasis proyek pada materi definisi himpunan. Jurnal Riset Pendidikan Matematika, [S. l.], v. 7, n. 2, p. 254–266, 2021. DOI: 10.21831/jrpm.v7i2.16483. Disponível em: https://journal.uny.ac.id/index.php/jrpm/article/view/16483. Acesso em: 10 may. 2025.