Mathematical competencies of 180 children were examined at 4 points between 2nd and
3rd grades (age range between 7 and 9 years). Children were initially classified into one of …

The reading and mathematics achievement and specific mathematical competencies of 74
children were followed over four time points during second and third grades. At the …

The mathematical performance of 182 third and fourth graders in 8 different areas of
mathematics was examined. The children belonged to 4 achievement groups: children with …

The aim of the study is to investigate the informal and formal mathematical knowledge of
children suffering from" mathematics difficulty"(MD). The research involves comparisons …

The performance of 210 2nd graders in different areas of mathematical cognition was
examined. Children were divided into 4 achievement groups: children with difficulties in …

In a sample of 39 children with mathematical learning disabilities (MLD) and 106 typically
developing controls belonging to three control groups of three different ages, we found that …

Although mathematical learning difficulties are widespread among US schoolchildren, they
have been studied far less extensively than have reading difficulties. Reading ability …

Arithmetic and cognitive skills of children with mathematical difficulties (MD-only), with
comorbid reading difficulties (MD-RD), with reading difficulties (RD-only), and normally …

First-to fifth-grade mathematics and word reading achievement were assessed for children
with mathematical learning disability (MLD, n= 16), persistent low achievement (LA, n= 29) …

Based on their performance on a standardized achievement test, second-grade children (N=
49) were classified as having mathematics difficulties with normal reading achievement (MD …