The Number Rods help a child associate numbers 1-10 with their name and quantity, and introduce numerical order in a work that  is comfortable to the child because of it is similarity to the Red Rods. The Number Rods can also be a tool for addition and subtraction.
en solid wooden rods divided into units by alternating colors of red and blue. The rods are constant in height and width (2.5cm) while graduated in length from 10 cm to 1 meter.