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Abstract

We describe how Computer Algebra Systems (CASs) can be used as cognitive tools in a learning environment. In particular, we show how a CAS is employed in ActiveMath, how different types of CAS-exercises are designed, and how feedback can be produced with the help of the very same CAS. We report the results of a first preliminary formative evaluation of ActiveMath’ CAS-exercises in a university course and some modifications of ActiveMath caused by this evaluation.

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