This paper reports on a case-study design experiment in the domain of fraction as number-measure. We designed and implemented a set of exploratory tasks concerning comparison and ordering of fractions as well as operations with fractions. Two groups of 12-year-old students worked collaboratively using paper and pencil as well as a specially…

This article discusses some important aspects of a three-year educational project (1997-2000) that took place in an Athenian primary school where a high percentage (60%) of pupils did not have Greek as their mother tongue. The principal objective of the project was to create, through a variety of approaches, conditions that would allow the…