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De Smedt, Bert; Gilmore, Camilla K. – Journal of Experimental Child Psychology, 2011
This study examined numerical magnitude processing in first graders with severe and mild forms of mathematical difficulties, children with mathematics learning disabilities (MLD) and children with low achievement (LA) in mathematics, respectively. In total, 20 children with MLD, 21 children with LA, and 41 regular achievers completed a numerical…
Descriptors: Mathematics Education, Learning Disabilities, Low Achievement, Grade 1
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Sasanguie, Delphine; De Smedt, Bert; Defever, Emmy; Reynvoet, Bert – British Journal of Developmental Psychology, 2012
Various measures have been used to investigate number processing in children, including a number comparison or a number line estimation task. The present study aimed to examine whether and to which extent these different measures of number representation are related to performance on a curriculum-based standardized mathematics achievement test in…
Descriptors: Mathematics Achievement, Number Concepts, Grade 6, Cognitive Development
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Brankaer, Carmen; Ghesquiere, Pol; De Smedt, Bert – Research in Developmental Disabilities: A Multidisciplinary Journal, 2011
The present study investigated numerical magnitude processing in children with mild intellectual disabilities (MID) and examined whether these children have difficulties in the ability to represent numerical magnitudes and/or difficulties in the ability to access numerical magnitudes from formal symbols. We compared the performance of 26 children…
Descriptors: Mild Mental Retardation, Thinking Skills, Mathematics Skills, Cognitive Processes
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Torbeyns, Joke; De Smedt, Bert; Stassens, Nick; Ghesquiere, Pol; Verschaffel, Lieven – Mathematical Thinking and Learning: An International Journal, 2009
Subtraction problems of the type a - b = ? can be "flexibly" solved by various strategies, including the indirect addition strategy ("how much do I have to add to b to get at a?"). Little research has been done on the use of the indirect addition strategy with multi-digit numbers. The present literature review entails a summary…
Descriptors: Elementary School Students, Young Adults, Subtraction, Learning Strategies