\input zb-basic
\input zb-matheduc
\iteman{ZMATH 2002e.04299}
\itemau{Heid, M. Kathleen; Hollebrands, Karen F.; Iseri, Linda W.}
\itemti{Reasoning and justification, with examples from technological environments.}
\itemso{Math. Teach. (Reston) 95, No. 3, 210-216 (2002).}
\itemab
This article describes the successful use of a computer algebra system, CAS, with a student as he worked on a problem involving functions far more difficult than he had encountered previously.
\itemrv{~}
\itemcc{I24}
\itemut{}
\itemli{}
\end