Quality Montessori Materials for Toddler,
Primary and Elementary Environments.
E&O Montessori USA.
This cube represents the equation (a + b + c)3 in concrete form and differs from the Trinomial Cube in that the component pieces are color-coded to represent hierarchical values from 1 unit to 1 million.
This makes it possible for the child to equate an arithmetical value to each of the cubes and prisms.