Abstract
The arithmetic mean is probably the most commonly taught statistical measure. This study of 136 pre- and in-service teachers concentrates on responses to questions about the arithmetic mean in different contexts. It was devised to allow for increasingly sophisticated understanding of the concept to be demonstrated in the concrete-symbolic mode, and also allowed for ikonic mode processing. The results are considered from the perspective of cognitive development. Cycles of response in both ikonic and concrete-symbolic mode are identified and described. A theoretical model to explain the interaction between the modes is proposed. The implications of these findings is briefly discussed.
Rosemary A. Callingham
Teachers’ Cognitive Functioning In The Context Of Questions Using The Arithmetic Mean