The focus of this issue of "NetNews" is dyscalculia, or math disability. Most of the attention over the years has been on reading and writing difficulties, thus leading to the belief that math difficulties are not very common or serious. However, it has been estimated that about 6% of school-age children experience significant math difficulties. Although this is far less than the estimated 20% incidence rate for reading difficulties, today's world calls for strong mathematical knowledge and reasoning or "numeracy skills." As with any area of disability, dyscalculia ranges from mild to severe. It too falls under the special education category of specific learning disability and impacts the area of mathematics. There is not a single type of dyscalculia; it is as varied and complex as dyslexia and dysgraphia. Other topics discussed in this issue of "NetNews" include: (1) Math Assessment; (2) Improving Number Sense; (3) Improving Math Skills; and (4) Math Accommodations. [For Volume 5, Number 3 of "NetNews," see ED493592.]