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Monari Martinez, Elisabetta; Benedetti, Nives – European Journal of Special Needs Education, 2011
The key questions are: is it true that persons with Down's syndrome can study mathematics only at a very elementary level? Might it be possible that their difficulties are mainly restricted to some fields, such as numeracy and mental computation, but do not encompass the entire domain of mathematics? Is the use of a calculator recommended? Is…
Descriptors: Familiarity, Numeracy, Mental Computation, Calculators
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Orsini, A.; Pezzuti, L.; Hulbert, S. – Journal of Intellectual Disability Research, 2015
Background: It is now widely known that children with severe intellectual disability show a 'floor effect' on the Wechsler scales. This effect emerges because the practice of transforming raw scores into scaled scores eliminates any variability present in participants with low intellectual ability and because intelligence quotient (IQ) scores are…
Descriptors: Severe Mental Retardation, Raw Scores, Scores, Foreign Countries
Novotna, Jarmila, Ed.; Moraova, Hana, Ed.; Kratka, Magdalena, Ed.; Stehlikova, Nad'a, Ed. – International Group for the Psychology of Mathematics Education, 2006
This document contains the second volume of the proceedings of the 30th Annual Conference of the International Group for the Psychology of Mathematics Education. Conference presentations are centered around the theme "Mathematics at the Centre." This volume features 60 research reports by presenters with last names beginning between Abr…
Descriptors: Program Effectiveness, Foreign Countries, Middle Schools, Textbooks
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Colomer, Carla; Re, Anna M.; Miranda, Ana; Lucangeli, Daniela – Learning Disabilities: A Contemporary Journal, 2013
The aim of this study was to investigate the specific numerical and calculation abilities of 28 children with ADHD without comorbid mathematical learning disabilities (LD), ranging from the 1st to the 5th grade of primary school, and to examine the stability or the development of the arithmetic profile. Our results showed that a high percentage of…
Descriptors: Numeracy, Computation, Mathematics Skills, Children
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Anobile, Giovanni; Arrighi, Roberto; Castaldi, Elisa; Grassi, Eleonora; Pedonese, Lara; Moscoso, Paula A. M.; Burr, David C. – Developmental Psychology, 2018
Humans and other animals are able to make rough estimations of quantities using what has been termed the "approximate number system" (ANS). Much evidence suggests that sensitivity to numerosity correlates with symbolic math capacity, leading to the suggestion that the ANS may serve as a start-up tool to develop symbolic math. Many…
Descriptors: Children, Mathematics Skills, Spatial Ability, Time
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Re, Anna Maria; Pedron, Martina; Tressoldi, Patrizio Emanuele; Lucangeli, Daniela – Exceptional Children, 2014
The purpose of this study was to determine the efficacy of specific, individualized training for students with different levels of mathematical difficulties. Fifty-four students, with either severe or mild math difficulties, were assigned to individualized training or to a control condition. Ten students with severe math difficulties…
Descriptors: Mathematics Instruction, Individualized Instruction, Mathematics Skills, Learning Disabilities