The Effect of Learning Cycle 9E and Self-Confidence on Mathematical Problem-Solving Ability. Indonesian Journal Of Education, [S. l.], v. 2, n. 1, p. 177–183, 2025. DOI: 10.71417/ije.v2i1.414. Disponível em: https://jurnalpustakacendekia.com/index.php/IJE/article/view/414.. Acesso em: 31 may. 2025.