AL-NAJADAT, Muhammad Hussain Faris. The Effectiveness of Instructional Program based on Constructivism Theory on Acquiring Geographical Concepts among the Ninth Grade Students in Jordan. Journal of Educational and Psychological Sciences, New Mexico, United States, v. 4, n. 16, p. 70–52, 2020. DOI: 10.26389/AJSRP.M151219. Disponível em: https://www.ajsrp.ojsexpert.com/index.php/jeps/article/view/2401. Acesso em: 21 dec. 2025.