Developmental dyscalculia is a persistent difficulty in understanding numbers which can affect anyone, regardless of age or ability. If 6 percent of children have dyscalculia, that would mean one or two children in each primary school class of 30 – about as many children as have been estimated to have dyslexia. But dyscalculia is less well known, by both the general public and teachers. It is also less well researched in comparison to other learning difficulties. Children with dyscalculia may struggle to learn foundational mathematical skills and concepts, such as simple counting, adding, subtracting and simple multiplication as well as times tables. Later, they may have difficulty with more advanced mathematical facts and procedures, such as borrowing and carrying over but also understanding fractions and ratios, for instance. Dyscalculia not only affects children during math lessons: It can have an impact on all areas of the curriculum.
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