When teaching addition with the number rods, which combination is introduced first?

The introduction of the combination 9 + 1 when teaching addition with number rods is significant for several reasons rooted in Montessori methodology. This combination, with the use of physical rods, allows children to visually and tangibly grasp the concept of addition in a clear and straightforward manner.

Using 9 + 1 involves the addition of a rod representing a single unit to a rod representing the number nine, which is generally easy for children to visualize. This practical approach to learning reinforces the idea of ‘ten’ as a complete set, laying a foundational understanding of numbers and their relationships. The number rods allow children to see that adding one to nine results in ten, which is an essential step in developing their number sense.

Moreover, this choice builds confidence because it involves combining a single unit with a larger number, making it an accessible starting point for young learners while also preparing them for more complex additions later on. In Montessori education, the emphasis is on nurturing self-discovery and understanding, and using a straightforward combination like 9 + 1 aligns perfectly with these principles, making it an ideal initial introduction to addition.