AL-MAHAB, AbdolRahman Ali Saleh; SAEED, Radman Mohamed. The Level of Conceptual Understanding of Functions and their Transformations and its Relationship with the Productive Motivation among Mathematics Students in the Faculty of Education University of Sana`a. Journal of Educational and Psychological Sciences, New Mexico, United States, v. 7, n. 17, p. 156–172, 2023. DOI: 10.26389/AJSRP.M130223. Disponível em: https://www.ajsrp.ojsexpert.com/index.php/jeps/article/view/6413. Acesso em: 20 dec. 2025.