Abstract
Mental computation is an important aspect of numeracy. There is little information
available, however, about appropriate sequences of learning, or what can be expected of
students in different years. The responses of 3035 students in years 3 to 10 to linked tests of
mental computation were placed on a single scale using Rasch modelling techniques. An
eight level scale of mental computation development was identified, and student
achievement across the years was mapped onto these levels. The findings and their
implications for the classroom are discussed.
Rosemary Callingham & Alistair McIntosh