VAIOPOULOU, J.; PAPAGEORGIOU, G. Primary students’ conceptions of the Earth: Re-examining a fundamental research hypothesis on mental models. Preschool and Primary Education, [S. l.], v. 6, n. 1, p. 23–34, 2018. DOI: 10.12681/ppej.14210. Disponível em: https://ejournals.epublishing.ekt.gr/index.php/education/article/view/14210. Acesso em: 22 νοεμβρίου. 2024.