Dušan Krnel

Survey of research related to the development of the concept of ‘matter’

Saša A. Glažar, S. A. Glažar, Dušan Krnel, 1998 .

The development of the concept of ‘matter’: a cross‐age study of how children describe materials

Saša A. Glažar, Dušan Krnel, Rod Watson, 2005 .

The development of the concept of ¿matter¿: A cross-age study of how children classify materials

Dušan Krnel, Rod Watson, Dusan Krnel, 2003 .

Concept Formation in Childhood: Cross-Cultural Perspectives

Dušan Krnel, D. Skubic, 2015 .

Environmental literacy comparison between eco-schools and ordinary schools in Slovenia

Dušan Krnel, Stanka Naglic, 2009 .