Employment: - University Comenius Faculty of Natural Sciences – asistent 1980 – 1997 - PhD degree - 1987 - Assoc. Prof. since 1998 - Head of The Department of Didactic of Sciences 1998 – 2001 - Head of  The Research and Education IT Center Comenius University . – since 2002 - Member of National Council of the Slovak Republic -  2002-2006…