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Journal Article
Howie, Sarah, and Tjeerd Plomp. "TIMSS-Mathematics findings from national and international perspectives: in search of explanations." Educational Research and Evaluation: an international journal on theory and practice 11, no. 2 (2005): 101-106.
Report
Howie, Sarah J, and Tjeerd Plomp. English language proficiency and other factors influencing mathematics achievement at junior secondary level in South Africa. 2001.
Conference Paper
Howie, Sarah J, and Tjeerd Plomp. "The importance of national options in IEA international comparative studies: Exploring the effects of language proficiency upon secondary students' performance in TIMSS '99 mathematics in South Africa." 1st IEA International Research Conference. Nicosia, Cyprus, May, 2004.
Report
Howie, Sarah J, and Tjeerd Plomp. Language proficiency and contextual factors influencing secondary students' performance in mathematics in South Africa.. 2003.
Book
Plomp, Tjeerd, Sarah Howie, and Barry McGaw. International handbook of educational evaluation. : Springer, 2003.
Book Section
Howie, Sarah, and Tjeerd Plomp. "International handbook of educational policy." (2005) International Comparative Studies of Education and Large-Scale Change.
Showing 1-6 of 6