HIRUNI SHASHI; JEEVANI HERATH. Improving Written Communication Skills with Project-Based Learning: A Quasi-Experimental Study in Sri Lankan Plantation Sector Schools. Research Mosaic, [S. l.], v. 6, n. 3, p. 17–31, 2026. DOI: 10.64428/rm/v6.i3.2. Disponível em: https://www.researchmosaic.com/index.php/rm/article/view/255.. Acesso em: 30 sep. 2026.