KITSNIK, Mare; NOVAK, Jelizaveta. Upper secondary school students’ perceptions of the interest, appropriate challenges, and developmental value of Estonian as a second language learning materials: A study of the communicative learning package Sõnajalaõis B2.1. Eesti Haridusteaduste Ajakiri. Estonian Journal of Education, [S. l.], v. 14, n. 2, p. 213–241, 2026. DOI: 10.12697/eha.2026.14.2.08. Disponível em: https://ojs.utlib.ee/index.php/EHA/article/view/29968. Acesso em: 30 oct. 2026.