In a post of 25 September titled "Re: PER for physics departments"
[Hake (2004)], I wrote:
"Rather [than 'provide a list of research-based teaching approaches
in the order of increasing degree of reformation'], it might be
better to follow Ken Heller's
<http://www.spa.umn.edu/directory/heller> lead [Heller (1999a,b)] and
list courses that 'do not significantly change the course content and
can be incorporated within its traditional framework of lectures,
recitation sections, and laboratories.' "
I gave the Heller (1999a) reference as:
Heller, K.J. 1999a. "Introductory physics reform in the traditional
format: an intellectual framework," AIP Forum on Education
Newsletter, Summer: pp. 7-9; formerly online at
<http://webs.csu.edu/~bisb2/FEdnl/heller.htm>, NOW A LINKROTTED URL.
Thanks to APS Webmaster Joanne Fincham, the linkrot has now been
irradicated. The corrected reference is: