INTRODUCTION
Measurement is one of the subjects in mathematics that can be considered as a top agent for connecting mathematics not only with everyday life but also with other areas (e.g. geometry, statistics). Because of its well-known importance, the study of measurement has received special attention by curriculum developers, and it has a special place in every mathematics curriculum. Considering the measurement topics, length measurement, which is the starting point of almost all mathematics curricula, is critically important for the construction of students’ basic ideas about measurement.