KELLER, Lars. Operative Verbs as a Key for Teaching and Testing Competencies–About Hopes and Disruptive Factors. Journal of Geography Education, [S. l.], v. 40, n. 4, p. 184–194, 2012. DOI: 10.18452/25085. Disponível em: https://zgd-journal.de/index.php/zgd/article/view/139. Acesso em: 2 apr. 2026.