Some preliminary results
n
A study of 60 classes around the country by
Dick Hake* shows that across a wide range of
initial states the
fraction of the possible gain
is
similar for classes of a similar structure.
n
For traditional classes he finds
h
»
0.20
±
0.05
* R. R. Hake, Am. J. Phys.
66
:1, 64-74 (1998)
38