@incollection{ArzBazz00,
title = {A model for analyzing algebraic processes of thinking},
author = {Ferdinando Arzarello and Luciana Bazzini and Giampaolo Chiappini},
booktitle = {Perspectives on School Algebra},
editor = {Rosamund Sutherland and Teresa Rojano and Alan Bell and Romulo Lins},
publisher = {Springer},
url = {http://print.google.com/print?id=0ci1Oy8vE50C\&pg=PA61},
year = {2000},
comment = {"it is very well known that students show difficulties in learning the symbolic language of algebra; many authors have pointed out that a major problem consists of students' incapability of relating symbolic expressions to their meaning: th eroot of many misunderstanding lie in the inadequecy of such a relationship, leading to incorrect performance and blind manipulations with algebraic symbolism (see Sfard (1991), Kieran (1992).}, priority = {2}, citeulike-article-id = {378202},
keywords = {algebra bibtex-import fetch generalization it library representation symbol }
}
::