TYAGI, Tarun kumar. Effectiveness of Problem-based Learning on Mathematisation of Middle School Students. INDIAN EDUCATIONAL REVIEW, [S. l.], v. 63, n. 2, p. p.60–77, 2026. Disponível em: https://ejournals.ncert.gov.in/index.php/ier/article/view/5102. Acesso em: 1 may. 2026.