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[xmca] concept

Hello all:

Recent discussions have caused me to ponder the "concept of concept".  It 
is not merely a property that something posseses; for water certainly 
contains hydrogen and oxygen regardless of whether it is labeled as such. 
However; if I am learning about water than I am provided the opportunity 
to observe and experiment with the properties water exhibits/contains.  At 
zero degrees celsius the water freezes, at one hundred degrees celsius it 
boils.  Again these are properties but as I am learning about them do they 
become concepts?  That liquids freeze and boil.  Is answering these 
questions on a science quiz enough to claim a student can conceptualize 
boiling and freezing?  I believe LSV would answer no.  So then back to the 
blocks experiment and what precisely was LSV proposing about the 
development of concepts?

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