DIO, R. V. Exploring Vertical Coherence of Content Topics in Philippine Spiral Kto10 Mathematics Curriculum. International Journal of Learning, Teaching and Educational Research, [S. l.], v. 19, n. 11, p. 259–282, 2020. Disponível em: https://www.ijlter.myres.net/index.php/ijlter/article/view/216. Acesso em: 10 sep. 2026.