“…Similarly, research has shown thatprospective teachers rely on procedures in other areas of mathematics, such as functions [3] and division [4]. The accepted importance ofsubject knowledge would suggest that a teacher, with limited understanding of the mathematical concepts, would not be effective in developing children's understanding for a topic.Studies, such as [5], have found that many prospective teachers represented the topic of area through the demonstration of procedures and the use of formulae,rather than focusing on activities that would support understanding. What we do not knowiswhether these were the prospective teachers who, themselves, had limited understanding.…”