CHINAKA, T. W.; SONDLO, A.; NKOSI, L. Retention and cognitive structures of intermediate primary learners on the concept of phase changes in matter. Contemporary Educational Researches Journal, [S. l.], v. 15, n. 2, p. 108–123, 2025. DOI: 10.18844/cerj.v15i2.9701. Disponível em: https://un-pub.eu/ojs/index.php/cerj/article/view/9701. Acesso em: 13 aug. 2025.