To date, a number of studies have demonstrated the existence of mismatches between children's "implicit" and "explicit" knowledge at certain points in development that become manifest by their gestures and gaze orientation in different problem solving contexts. Stimulated by this research, we used eye movement measurement to…

This study investigates the cognitive and linguistic aspects of the concept of time which is assumed to consist of the components of order (0), simultaneity (S), and duration (D) as well as their coordination, i.e., coordination of order and duration (OD), and coordination of simultaneity and duration (SD). It was hypothesized that each component…

A study is reported relevant to the relationship between first words learned by children and gestural symbolization under a variety of contextual conditions. It is part of a larger longitudinal study of 32 children at 10, 13, 20, and 27 months of age. The children were seen in three standardized situations for eliciting gestural and vocal symbols:…

The first volume of the 29th annual conference of the International Group for the Psychology of Mathematics Education contains plenary lecture and research forum papers as listed below. Short oral communications papers, poster presentations, brief summaries of discussion groups, and working sessions are also included in the volume. The plenary…