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Lower secondary school students' knowledge of fractions

Increasing Student Competence and Confidence in Algebra and Multiplicative Structures (ICCAMS) is a 4-year research project funded by the Economic and Social Research Council in the UK (Hodgen et al. 2008). In this paper, we report and discuss early findings of the study regarding students’ understanding of fractions. In particular, we compare Key Stage 3 (ages 11-14) students’ performance in 2008 and 1977 on items probing their understanding of fractions and decimals. We then discuss some interview responses to a fractions item, with particular reference to their use of diagrams.