Dyscalculia (or dyscalcula)
"Dyscalculia" is a lesser-known learning disability that affects mathatical calculations. It is derived from the generic name "mathematics difficulty."
There are rigorous criteria used to determine if a student has a learning disability as it is defined by special education criteria. When a student's mathematics difficulties are severe enough to meet certain criteria, special education services are indicated. However, "dyscalculia" has no clearly defined criteria and cannot be assessed reliably. Inasmuch, a student with any degree of mathematics difficulty may be considered to have "dyscalculia" by some educational specialists.
Because of the ambiguity of categorization, being identified as having "dyscalculia" may or may not indicate the need for special education services. The term appears to be seldom used within public schools because of the lack of any clear, measurable criteria. Nevertheless, many students have it.
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