HARAHAP, M. P.; NASUTION, N. E. A. Validity of Computer Based Learning Media to Improve Junior High School Students’ Learning Outcomes on Ecosystem Topics. META: Journal of Science and Technological Education, [S. l.], v. 1, n. 1, p. 31–45, 2022. Disponível em: https://meta.amiin.or.id/index.php/meta/article/view/3. Acesso em: 27 sep. 2025.