Abstract
In recent years calculators and computers have been used more often in mathematics teaching.
While their potential advantages in terms of dynamic multiple representations has been
recognised for some time, it has not. always been clear how to integrate the technology into
conceptually· based teaching. While it is generally agreed that technology could play an
influential role in enhancing mathematical understanding, there is little data about how
students' cognition and knowledge building are affected by the instructional use of such tools.
In particular, a theoretical perspective on how to teach in such a way as to encourage students
to build inter-representational conceptual structures has,been lacking. In this study we take up
this issue by examining how two experienced teachers plan and incorporate calculator and
computers in their teaching. The results suggest that these teachers aim to build knowledge
schemata that are rich in connections and representations.
Mohan Chinnappan & Mike Thomas