CAS : student engagement requires unambiguous advantages

Encouraging students to develop effective use of Computer Algebra Systems (CAS) is not trivial. This paper reports on a group of undergraduate students who, despite carefully planned lectures and CAS availability for all learning and assessment tasks, failed to capitalize on its affordances. If students are to work within the technical constraints, and develop effective use of CAS, teachers need to provide assistance with technical difficulties, actively demonstrate CAS' value and unambiguously reward its strategic use in assessment.