Abstract
Details are provided of simple algebraic items which can be used to detect two particular ways students think about the numerical meanings of letters (in contrast to non-numerical thinking). The data from Year 7 students (n=228) and Year 8 students (n=139) on these items is analysed using response patterns to probe student thinking. Less than 10% of the students were correct on these items whilst the prevalence of the two most common error patterns is 20%-30% at each year level. New response patterns are detected, indicating that further improvements to the items will enable students’ thinking to be investigated further.
Vicki Steinle, Eugene Gvozdenko, Beth Price, Kaye Stacey, Robyn Pierce