When I toured the school we would like to send DS to there was a picture of one of the kids inside a huge castle he had built out of several different manipulatives, and I asked about it, since I kept hearing about using things in specific ways. The directress explained that the child had already had instruction on how each and every one of the manipulatives worked and understood, so he was now aloud to use them in way that went beyond their basic function, but that it was important to master the fundamental purpose first.
This reminded me of something I had come to believe back in college as an art major. Too many artist (and art students) these days do abstract, cubist, assemblage, minimalist, etc work b/c they don't know the basic and fundamental skills for drawing.
You have to realize that the great artist of just a little bit back
all could do realism
if they wanted to, and moved beyond it by choice. A while back I saw a DeKooning (master of abstract expressionism) painting of a perfectly realistic bowl of fruit. DeKooning
painted abstract wild red haired women by choice not b/c he didn't know how to paint
correctly. I strongly believe that had DeKooning skipped formal training in drawing that his
abstract expressionism peices would not be nearly as great as they are.