When students use playful materials to build a physical object that represents their thinking, they grapple with texts in new ...

This is a preview. Log in through your library . Abstract The ratio of the number Xn of different words (types) in a text pf length n (token) words to n has received considerable attention in the ...

The Russian Review, Vol. 52, No. 3 (Jul., 1993), pp. 397-414 (18 pages) ...