JASTRZĘBOWSKA, Kalina. What is the area of a pig? Problem posing and problem solving in early childhood education. Problemy Wczesnej Edukacji, [S. l.], v. 57, n. 2, p. 114–132, 2023. DOI: 10.26881/pwe.2023.57.09. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/pwe/article/view/10550. Acesso em: 11 grudz. 2024.