Abstract
Fourteen Year 11 advanced mathematics students participated in individual teaching interviews designed to investigate how they learnt various rate of change concepts. The theoretical framework compared two models of abstraction: the empirical abstraction model of Mitchelmore and White and the nested RBC model of Hershkowitz, Schwarz, and Dreyfus. Examples of learning were found that fitted the nested RBC model, but none that fitted the empirical abstraction model. It was concluded that the nested RBC model is valuable for understanding student learning of the concepts of average and instantaneous rate of change, but that empirical abstraction is likely to be more valuable in understanding
how students develop a global concept of rate of change earlier.
Ibrahim Hassan and Michael Mitchelmore