Here is information about the Kindergarten Math program at RCPS
The kindergarten standards place emphasis on developing the concept of number by counting; combining, sorting, and comparing sets of objects; recognizing and describing simple repeating patterns; and recognizing shapes and sizes of figures and objects. Students will investigate nonstandard measurement, collect data, and create graphs. The idea of fractions will be introduced.
Students are encouraged to use correctly the concepts, skills, symbols, and vocabulary identified in the standards.