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Measuring Middle Grades Teachers' Understanding of Rational Numbers with the Mixture Rasch Model
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Izsak, Andrew; Orrill, Chandra Hawley; Cohen, Allan S.; Brown, Rachael Eriksen – Elementary School Journal, 2010
We report the development of a multiple-choice instrument that measures the mathematical knowledge needed for teaching arithmetic with fractions, decimals, and proportions. In particular, the instrument emphasizes the knowledge needed to reason about such arithmetic when numbers are embedded in problem situations. We administered our instrument to…
Descriptors: Mathematics Instruction, Numbers, Arithmetic, Interviews