EL- GOHARY, Hala Khairy Abdel- Ghany. The effectiveness of a digital learning environment in developing the mathematical achievement of students with hearing impairment during the period of education disorder (COVID- 19). Journal of Educational and Psychological Sciences, New Mexico, United States, v. 5, n. 19, p. 94–72, 2021. DOI: 10.26389/AJSRP.J291120. Disponível em: https://www.ajsrp.ojsexpert.com/index.php/jeps/article/view/3660. Acesso em: 20 dec. 2025.