Abstract
This paper focuses on the growth of understanding about ratios and fractions by a group of four pre-service teachers engaged in an on-line knowledge-building community. Pirie and Kieren?s (1994) model for the growth of mathematical understanding was used as the framework for analysing their growth in understanding. This analysis revealed that the pre-service teachers made considerable advances in their understanding of ratio and fraction instructional representations and mathematical constructs embedded in ratios and fractions.
Mathew McDougall and Rod Nason
Growth Of Teacher Knowledge Within An On-Line Collaborative Learning Environment