Degree, Comenius U., 1974; D, Comenius U., 1978; Doctor of Philosophy, Charles U., Prague, 1988.
Teacher, Grammar School, Bratislava, Slovakia, 1975-1987; lecturer, Technology U., Bratislava, 1987-1990; lecturer, Comenius U., Bratislava, since 1990.
Member Association Slovak Mathematics International Group for Psychology of Mathematics Education.
Married Lenka Berová, July 22, 1989. 1 child, Peter.