Active contributors to this Scratchpads site are from the United States, Ecuador, Peru, and Brazil and include
Dr. Ralph Holzenthal, University of Minnesota
Dr. Adolfo Calor, Universidade Federal da Bahia, Salvador, Brazil, and University of Minnesota
Dr. Robin Elizabeth Thomson, University of Minnesota
Dr. Roger Blahnik, University of Minnesota
Dr. Blanca Rios Touma, Universidad Tecnológica Indoamérica, Quito, Ecuador
Lucas Marques de Camargos, Goiana, Brazil, and University of Minnesota
Fábio Quinteiro, Universidade do São Paulo, Ribeirão Preto, Brazil, and University of Minnesota
Luis Ernesto Rázuri Gonzales, Lima, Peru, and University of Minnesota