NotesFAQContact Us
Collection
Advanced
Search Tips
Showing all 2 results Save | Export
Peer reviewed Peer reviewed
PDF on ERIC Download full text
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
Peer reviewed Peer reviewed
PDF on ERIC Download full text
Tournaki, Nelly; Bae, Young Seh; Kerekes, Judit – Learning Disabilities: A Contemporary Journal, 2008
This study examined the effects on math performance of the use of the rekenrek, a manipulative developed by Adrian Treffers. The rekenrek looks like an abacus, but differs in that it is based on a five-structure and not a ten-structure system. It is comprised of two rows of 10 beads, each broken into two sets of 5 by color (i.e., in each row the…
Descriptors: Mathematics Education, Learning Disabilities, Scores, Subtraction