Abstract
The influence of the dynamic geometry tool, Cabri-geometre, on the learning
of geometry was investigated. Twelve Year 7/8 pupils were divided into two
groups on the basis of van Hiele pre-tests: Group I, pupils at Level 0 or 1,
and Group H, the remaining pupils. Both groups completed six lessons with
structured Cabri worksheets then Group II pupils completed several
construction tasks, documented by means of Cabri files and tape-recorded
conversations. All· pupils increased their van Hiele levels for some or all of
the concepts involved.