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These files are maintained strictly for historical reference, research, and recordkeeping purposes, and the content has not been altered or updated since archiving. Content on this site may not meet current digital accessibility standards. If you require an alternative, accessible format of any information found on this site, please contact Bruce Jones, bjones@ucsd.edu to request an accommodation.
andy David Kellogg wrote:
... I don't think that quantity IS the basic concept in mathematics, though. Vygotsky is pretty clear about this: just a preschooler has to be able to abstract actual objects away from groups in order to form the idea of abstract quantity, the schoolchild has to be able to abstract quantities away from numbers in order to form the idea of RELATIONS between quantities, or OPERATORS.
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