The Lower School math program provides practical experience in mathematical skills and seeks to help children see the importance and aesthetic qualities of mathematics. Children are engaged in a rich learning environment using a wide range of manipulative materials, so they may build a strong, broad-based understanding of math concepts and relationships. Concepts are introduced and practiced at the concrete level with hands-on work; abstract representations are then learned through projects, games, and written work. Using a problem-solving approach, the program follows recommendations from the National Council of Teachers of Mathematics Standards.

Listed in the following section are the major goals, by level, of the Lower School mathematics program. The goals are categorized as follows: number sense, computation, data analysis, geometry, measurement, patterns and relationships, and math communications. These categories are used for clarity of description, not to indicate that they are taught in isolation.