MAWAN, V. The Development of Learning Activities for Third-grade Students Regarding Addition, Subtraction, Multiplication and Division: Using a Bar Model and a STAR Strategy. An Online Journal of Education, [S. l.], v. 19, n. 2, p. OJED1902007 (14 pages), 2024. DOI: 10.14456/ojed.2024.7. Disponível em: https://so01.tci-thaijo.org/index.php/OJED/article/view/270119. Acesso em: 2 apr. 2025.