This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Dalibor Kučera
University of South Bohemia in České Budějovice Faculty of Education Department of Pedagogy and Psychology Jeronýmova 10 371 15 České Budějovice Czech Republic
Jana M. Havigerová
University of Hradec Králové Faculty of Education Department of Primary and Preprimary Education Náměstí svobody 301 500 03 Hradec Králové Czech Republic