Bruce Moody and Jenny Young-LoveridgeThis presentation documents the learning journey of a group of six Year 5/6 students from a low decile school. These students worked with the first author over several sessions to build their understanding of fractions (i.e., tenths, hundredths), and the links between these fractions and the corresponding decimal places. Structured materials (plastic tubing cut to different lengths) based on a linear measurement model of the number line were used to help students appreciate the relationships between 1 whole, 1/10, and 1/100. Selected excerpts from the learning sessions are used to illustrate the insights that emerged during learning sessions. The findings are interpreted using the theoretical frameworks of Piaget and Vygotsky.