Abstract
This paper provides insight about the development of addition and subtraction strategies for
nearly 22,000 Australian primary school children in 2016. The children were each assessed
by their teacher using a task-based assessment interview that identified the strategies they
used to mentally perform addition and subtraction, and matched these to a growth point
framework. The findings highlight the broad distribution of strategies used by children in
each grade level and suggest that few children, including those in Grade 6, reach Growth
Point 6 that involves the mental calculation of two-digit and three-digit numbers. These
findings have important implications for classroom teaching and professional learning.
Ann Gervasoni, Kerry Giumelli, & Barbara McHugh
The Development Of Addition And Subtractions Strategies For Children In Kindergarten To Grade 6: Insights And Implications