OJO, O. F. Effects of two problem solving methods on senior secondary school students’ performance in simultaneous equations in Ekiti State. Advances in Social Sciences Research Journal, [S. l.], v. 6, n. 11, p. 155–161, 2019. DOI: 10.14738/assrj.611.6156. Disponível em: https://journals.scholarpublishing.org/index.php/ASSRJ/article/view/6156. Acesso em: 25 apr. 2024.