Bernhard Kutzler* (Austria), b.kutzler@eunet.at

Indispensable Manual Calculation Skills in a CAS Math Teaching Environment

What manual calculation skills are still needed when students use
graphic/symbolic calculators or computers with computer algebra systems (CAS)?
What should students be able to do manually, i.e. just using paper and pencil?
In this lecture the outcome of a two day discussion on these questions, held by
W Herget, H Heugl, E Lehmann, and the author, will be presented.  Our answers
and proposals are meant to be a challenge, aiming at sparking off a broad
discussion about what manual calculation skills we still need to teach and
assess.