Jasim Al-Dulaimy, Basim Mahammad, Ilham Jabbar Faris, y Hassan Kamil Risen Al-Kinan. «Two Strategies Are Proposed According To Active Education And Their On The Effect On The Acquisition Of Mathematical Concepts For Second Grade Students In Mathematics». Opción 350 (junio 9, 2019): 28. Accedido julio 31, 2025. https://produccioncientifica.luz.edu.ve/index.php/opcion/article/view/31555.