GUIDANG, Excel Philip B.; ALAGAO, Caren Q.; ALVAREZ, Marygrace B.; CARREON, Jhayzel Blanca T.; ALCALDE, Madelyn A.; QUINTINITA, Lezlee L. Interactive Ilokano Mother Tongue-Based Courseware for Grade 1 Mathematics: Development and Usability. JPAIR Institutional Research, [S. l.], v. 6, n. 1, p. 46–60, 2015. DOI: 10.7719/irj.v6i1.362. Disponível em: https://www.philair.org/index.php/irj/article/view/362. Acesso em: 21 apr. 2026.