This paper has two goals. The first is to present a model of the acquisition of a concept image of function. Theories describing the objectification of function are outlined through two different but related paths, and both stem from the conception of function as a process. The first path to objectification involves the generalization of the…

The effective use of technology in the mathematics classroom depends on the interaction between students and their peers, students and teacher, and students and technology. This report describes a study of the introduction of a cognitive teaching model for using graphing calculators in a secondary mathematics classroom in Hong Kong. Episodes of…