DAVE ARTHUR R. ROBLEDO; AIMEE F. MOTIN; ELISEO C. CATAPANG; ERMA D. MAALIHAN. TEACHING BEYOND BORDERS: EFFECTIVENESS OF HEURISTIC APPROACH IN TEACHING SCIENCE IN PUBLIC SECONDARY SCHOOLS IN AREA IV, DIVISION OF BATANGAS, PHILIPPINES. International Engineering Journal For Research & Development, [S. l.], v. 6, n. 2, p. 13, 2021. DOI: 10.17605/OSF.IO/37KWH. Disponível em: http://www.iejrd.com/index.php/iejrd/article/view/1913. Acesso em: 10 may. 2026.