PENINGKATAN KOMUNIKASI MATEMATIS SISWA KELAS V SD NEGERI MIJEN 2 DITINJAU DARI KEAKTIFAN BELAJAR MELALUI MODEL PROJECT-BASED LEARNING. Sindoro. 2026;18(3):2681-2690. Accessed October 2, 2026. https://cibjournal.com/index.php/sindoro/article/view/7211