Peningkatan Hasil Belajar Matematika melalui Problem Based Learning Berbantuan Puzzle. JURNAL PENA EDUKASI, [S. l.], v. 13, n. 1, p. 46–54, 2026. DOI: 10.54314/jpe.v13i1.5964. Disponível em: https://jurnal.goretanpena.com/index.php/JPE/article/view/5964.. Acesso em: 4 sep. 2026.