MARHAMAH HASIBUAN, Ainul; FAUZI; ERMAWATI. Development of Differentiated Mathematics E-books Based on Langkat Malay Culture to Improve Students’ Functional Thinking and Critical Thinking Skills. Journal of Practice Learning and Educational Development , [S. l.], v. 5, n. 4, p. 1268–1279, 2025. DOI: 10.58737/jpled.v5i4.878. Disponível em: https://www.digitalpress.gaes-edu.com/index.php/jpled/article/view/878. Acesso em: 8 oct. 2026.