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Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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OpenMath
An XML-based standard for representing mathematical objects and their semantics in a machine-readable format. Unlike MathML, which has both presentation (visual layout) and content (semantic structure) modes, OpenMath focuses purely on semantic meaning, defining mathematical…
Order-Irrelevance Principle
The counting principle that the order in which objects are counted does not affect the total — counting the same set of objects in any sequence will yield the same number. This concept, while intuitive for most people, is often not understood by learners with dyscalculia, who…

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