The mathematics program provides children with a solid background in arithmetic, geometry, measurement, and problem-solving skills, combining discovery and understanding of mathematical concepts with more traditional practice and review methodology. Using the Everyday Mathematics Program, part of the University of Chicago School Math Project, students develop their number sense and learn addition, subtraction, multiplication, and division, and practical math applications, such as the thermometer, calendar, analog clock, and money equivalence. Critical-thinking skills are developed through graphs, tables, and manipulative tools. In the third grade, algebraic concepts such as missing addends and factors, parentheses, and square numbers are introduced. Most of all, children learn that they can master and apply mathematical concepts and reasoning, as teachers encourage students to see math as both fun and intellectually challenging. A math coordinator supports classroom teachers with materials and ideas for enriching math teaching at the Primary School.