El Aprendizaje y la Enseñanza de las Matemáticas a Temprana EdadDr Douglas H Clements, Dr Julie Sarama, Dr Olga Lucia León Corredor, Dr Alissa Lange, Lida María León, Angie Toquica · First published 2015Open the Tome
Math In My World (Developing Problem Solvers) (McGraw Hill School and Glencoe MATHEMATICS, Gr 6 PartDr Douglas H Clements · First published 1999Open the Tome
Math in My World, Part 1, Grade 5, Teacher's EditionDr Douglas Clements, Kenneth W. Jones, Lois Gordon Mosely, Dr Linda Schulman · First published 1998Open the Tome
