This guide for a mathematics curriculum for grades 1-4 presents topics in sequential order for the entire four-year program. Grade level was not used for separating units; instead, an integrated sequencing of concepts was used in preparing this guide. The relationship between units is specified for the teacher as an explicit mapping of how a particular concept is developed throughout the program. Number concepts, numeration, geometrical concepts, measurement concepts, and operations with whole numbers and fractions are presented in 43 units. Each unit contains a description of the concepts and mathematical activities with which the students are to be presented. Specific performance objectives are also listed. (JP)