@article {MATHEDUC.02348390,
author = {Heid, M. Kathleen and Hollebrands, Karen F. and Iseri, Linda W.},
title = {Reasoning and justification, with examples from technological environments.},
year = {2002},
journal = {Mathematics Teacher},
volume = {95},
number = {3},
issn = {0025-5769},
pages = {210-216},
publisher = {National Council of Teachers of Mathematics (NCTM), Reston, VA},
abstract = {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.},
msc2010 = {I24xx},
identifier = {2002e.04299},
}