Profesor Titular en las catedras de Estadistica, Metodologia de la Investigacion e Informatica de la Universidad de Los Andes. Merida, Venezuela Master of Science. University of Wisconsin-Madison, USA Ph. D. Quantitative Research Metodolology in Mathematics Education. University of Wisconsin-Madison, USA Graduate Summer Courses in Biostatistics and Epidemiology (John Hopkins University, Baltimore, USA) Postdoctoral Program in Computers Applied to Mathematics Education (Universities of Iowa y Wisconsin, USA)