In the Lower School (grades K-5) boys learn basic math skills and operations through formal lessons as well as through individual investigation. They are required to learn the basic addition, subtraction, multiplication and division facts because quick recall of these makes all arithmetic computation more efficient, and makes concepts easier to grasp through the rapid availability of specific examples. Basic operations with whole numbers, fractions and decimals are introduced and reinforced at each grade level. Math in fifth grade is departmentalized and meets five times per week for either 40 or 60 minute blocks.
Boys use a sixth grade math textbook as the basis of the program in which they:
• estimate and solve equations with a variable for whole numbers, fractions and decimals
• describe, extend and make generalizations about numerical and geometric patterns,
• represent and analyze patterns and functions using words, graphs and tables
• express mathematical relationships using equations and variables
• solve and graph functions on coordinate planes
• represent data using tables and graphs
• calculate mean, median and mode
• apply order of operations
• understand exponential notation
• compute fluently with multi-digit whole numbers
• add, subtract, multiply and divide fractions and decimals
• convert fractions and decimals
• find least common multiple and greatest common factor using prime factorization
• add, subtract, multiply and divide integers
• understand and apply formulas for area and perimeter of rectangles, triangles and parallelograms
• calculate area and circumference of circles
• calculate the volume of three dimensional figures
• classify polygons and quadrilaterals according to angles and sides
• classify lines and angles
• measure angles
• determine complimentary and supplementary angles
• classify triangles
• understand congruency and symmetry
• choose appropriate operations to solve problems
• validate and explain solutions to problems.