LANDONG, Ahmad; DARI, Tasya Wulan; HARAHAP, Fahra Azuhra; SEMBIRING, Juliani br; KURNIAWAN, Rizky; MANIK, Devita Yetti; KHOIRY, Muhammad. Pengembangan Bahan Ajar Matematika Materi Bangun Datar Menggunakan Model PBL Terhadap Aktifitas Belajar Siswa Kelas IV SD. Innovative: Journal Of Social Science Research, [S. l.], v. 3, n. 2, p. 12784–12796, 2023. Disponível em: https://j-innovative.org/index.php/Innovative/article/view/1835. Acesso em: 4 jun. 2026.