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A 20-Year Study of Mathematics Achievement

Patrick Griffin, Rosemary Callingham 

May 2006, Volume 37, Issue 3, Page 167

Abstract:
Monitoring educational changes over many years is problematic when there are differences   in curricula, the nature of the variables being measured, and the selection of participants. Rasch measurement techniques provide a procedure that enables each  of these issues to be examined. Using archived and specially collected data, tests of numeracy undertaken in Tasmania over a 20-year period, from 1978 to 1997, were equated and mapped onto the same continuum through a combination of common item and common person equating. Examination of fit to the model showed that the nature of the measured construct had not changed over this period. Although test difficulty appears to have risen over the period, student achievement was relatively unchanged. The implications of these findings for longitudinal studies of achievement are discussed.   

Keywords:
Research Studies
Article
Assessment / Testing
Conceptual Development
Grades 9-12
Math Coordinator / Coach
Geometry & Measurement
Teacher
Problems
Problem Solving / Problem Posing
Representation