Upaya Meningkatkan Hasil Belajar Matematika Materi Bangun Ruang Menggunakan Model Problem Based Learning. Journal in Teaching and Education Area, [S. l.], v. 1, n. 3, p. 429–438, 2024. DOI: 10.69673/5kzvcp39. Disponível em: https://journal.jitera.ac.id/index.php/jitera/article/view/48.. Acesso em: 28 apr. 2026.