DEPAMAYLO, Rhea Beth; LALLEN, Lorie Lyn; TORRES, Juvyl; JINON, Stephen Raymund; BALES, Michelle. Ethnomathematical Practices in Brackish Water Fishpond Systems: A Study of Informal Mathematical Reasoning in Buying and Selling Activities. EIKI Journal of Effective Teaching Methods, London, U.K., v. 4, n. 3, 2026. DOI: 10.59652/0026jz32. Disponível em: https://journals.eikipub.com/index.php/jetm/article/view/884. Acesso em: 17 oct. 2026.