Research in Mathematics Education is an international English language journal, publishing original refereed articles on all aspects of mathematics education. Papers should address the central issues in terms which are of relevance across educational systems and informed by wider thinking in the field. The journal has three sections, covering research papers, book reviews, and current reports.The Research Papers section contains reports of studies involving empirical investigation and theoretical argumentation from which conclusions and implications can be drawn for future research and practice. Such reports are expected to show how the study builds on critical review of relevant literature and to provide an account of the methods and procedures used. Reports on thoughtful replications or variations of key earlier studies are welcome, as are critical reviews of some well-defined aspect of mathematics education. The journal welcomes high-quality research in any methodological tradition and is open to innovative and unusual approaches. All submissions are peer-reviewed.