Content Validity of Three-Tier Multiple Choice Virtual Reality-Based Assessment with Embedded Ethno-SSI Concepts on Acid-Base Topics. Online Learning In Educational Research (OLER), [S. l.], v. 5, n. 1, p. 173–188, 2025. DOI: 10.58524/oler.v5i1.665. Disponível em: https://journal.foundae.com/index.php/oler/article/view/665. Acesso em: 16 jan. 2026.