da Silva Queiroz, J.L. and Pivato, A. 2026. Between Immediacy and Persistence: Frustration, Teacher Mediation, and Mathematical Learning in the Digital Age . Revista Paranaense de Educação Matemática. 15, 36 (Jun. 2026). DOI:https://doi.org/10.33871/rpem.2026.15.36.11195.