Validation of Achievement Items for Fifth-Grade Elementary School Students on Multiplication and Division of Fractions. Indonesian Journal of Science, Technology, Engineering, Art, and Mathematics Education, [S. l.], v. 5, n. 1, p. 41–49, 2026. DOI: 10.33578/. Disponível em: https://ijsteame.ejournal.unri.ac.id/index.php/ijsteame/article/view/112. Acesso em: 27 oct. 2026.