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  • 1.
    Lönnstedt, Ingrid
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Mathematics and Computer Science, Department of Mathematics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Mathematics and Computer Science, Department of Mathematics, Mathematical Statistics.
    Rimini, Rebecca
    Bayesian microarray one-way anova and grouping cell lines by equal expression levels2004Report (Other scientific)
  • 2.
    Palm Kaplan, Kristina
    et al.
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Educational Sciences, Department of Education.
    Lönnstedt, Ingrid
    The test structure of TIMSS’ algebra varies between years and may influence the interpretability of Swedish students’ test scores over timeManuscript (preprint) (Other academic)
    Abstract [en]

    Results on large-scale assessments are often used as a rationale for development and reform of mathematics curricula. To examine this rationale, the case of Swedish students’ achievements on 197 algebra test items from four consecutive TIMSS tests are studied. The test items are characterized with social-semiotic and algebraic frameworks adapted from previous textbook studies to understand the test structure of each TIMSS assessment. The relationship between the test structure and student achievements is explored. A study of test structure changes over time suggest that the TIMSS’ algebra test scores are not comparable between assessments, and hence not a valid basis for estimation of knowledge trends.

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