Examining the relationship between motivation levels and academic achievement in mathematics: A quantitative analysis of Kuzhugchen Middle Secondary School. Bhutan Journal of Research and Development, [S. l.], v. 13, n. 2, 2024. DOI: 10.17102/bjrd.rub.13.2.008. Disponível em: https://www.bjrd.com.bt/index.php/bjrd/article/view/168. Acesso em: 11 jun. 2026.