Re: [xmca] Numbers - Natural or Real?

[Andy Blunden <ablunden@mira.net>]

Can you give us your reference here David, in a pubished translation of 
Vygotsky?
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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