Abstract
This paper is a report on the beginning of a much larger study that examines students' understanding and knowledge about the structures of arithmetic and generalising problems. Ninety-four students in their fmal years of primary school responded to a series of tasks designed to probe their knowledge of associativity and commutativity. The responses indicated that these students had failed to abstract from the experiences in arithmetic some of the mathematical structures believed necessary for the successful transition from arithmetic to algebra.
Elizabeth Warren & Lyn English