WIDADA, Wahyu. THE EXISTENCE OF STUDENTS IN TRANS EXTENDED COGNITIVE DEVELOPMENT ON LEARNING OF GRAPH THEORY*). Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah di Bidang Pendidikan Matematika, Indonesia, INA, v. 1, n. 1, 2015. DOI: 10.29407/jmen.v1i1.119. Disponível em: https://ojs.unpkediri.ac.id/index.php/matematika/article/view/119. Acesso em: 7 jun. 2025.