My six year old son just plotted a route from our house to his grandmother's,
a non-trivial, 45 minute drive on several different roads. His route choice
isn't great, but it shows a great deal of simplification. And no one has
ever really sat down with him and taught him how to read a map too much. It
was sort of unbelievable. He is still lukewarm to the idea of O races, tho.
Doesn't measure up to playing with K-NEX.