This document is one of six which set forth the mathematics components of the Project SEARCH Articulated Curriculum developed by the Utica (New York) City School District. Each volume deals with a broad area of mathematics and lists objectives related to that area for all grades from K through 12. Each objective listed is described first in general terms and then in terms of specific skills which students should exhibit. This volume concerns numbers and systems of numeration. The topics range from counting and recognition of numerals at the early levels to use of nondecimal systems, permutations and combinations, and interpretation of percents at upper levels. (SD)