MILKOVÁ, E. PUZZLES – A CREATIVE WAY OF DEVELOPMENT OF LOGICAL THINKING. Journal on Efficiency and Responsibility in Education and Science, [S. l.], v. 4, n. 4, p. 207–218, 2011. Disponível em: https://www.eriesjournal.com/index.php/eries/article/view/48. Acesso em: 26 apr. 2024.