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Subsitization
The ability to quantify a small set of items without conscious counting
Number Sense
Humans possess the ability to recognize that something has changed in a small connection, something has been added or removed
Cardinal
Subitizing and number sense, ability to quantify quickly and automatically, inaccessible to introspection
Verbal
Language contributes to sizes and numbers (little, big, few, first)
Symbolic
Symbols for certain numbers, communication by gestures or sign language
Ordinal
Internal metric system, can estimate quantities without tools (palm of hand, length of foot), imprecise
Transcoding
Ability to move from one code to another automatically
Developmental Dyscalculia
A learning disorder that affects mathematical abilities, including number sense, calculation, and problem-solving skills. It is characterized by difficulty understanding and manipulating numbers, as well as challenges with memorizing math facts.
Acalculia
Inability to process numbers and perform calculations as a result of a brain injury
Note
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