Development And Validation of Instrument of Self-Perceived Proficiency Factors Affecting Students’ Problem-Solving Skills on Gamified Mathematic Instruction. International Journal of Education in Mathematics, Science and Technology, [S. l.], v. 13, n. 1, p. 121–149, 2025. DOI: 10.46328/ijemst.4514. Disponível em: https://ijemst.com/index.php/ijemst/article/view/748. Acesso em: 1 jul. 2025.