Quality Montessori Materials for Toddler,
Primary and Elementary Since 1993.
E&O Montessori USA.
10 solid wooden rods painted red, increasing in length from 10 to 100 cm
The red rods are rods with a square cross section, varying only in length.
The smallest is 10 cm long and the largest is one meter long. Each rod is 2.5 cm/1inch square.
By holding the ends of the rods with two hands, the material is designed to give the child a sense of long and short.