MOHAMED KHALIL IBRAHIM; ADNAN HEKMAT AL-BAYATI. Effectiveness Of Educational Bulletins In The Achievement Of Fifth Grade Students In Science. Elementary Education Online, [S. l.], v. 20, n. 1, p. 6177–6192, 2021. Disponível em: https://ilkogretim-online.org/index.php/pub/article/view/1480. Acesso em: 15 jan. 2025.