(includes material from Situation 31)

Situation 37 Prepared at Pennsylvania State University
Mid-Atlantic Center for Mathematics Teaching and Learning
18 July 2005 – Jeanne Shimizu

Situation 31 Prepared at Pennsylvania State University
Mid-Atlantic Center for Mathematics Teaching and Learning
24 June 2005 - Tracy, Jana, and Christa

Situation 31 Edited at University of Georgia
Center for Proficiency in Teaching Mathematics
9 February 2007 - Erik Tillema
20 February 2007-Jeremy Kilpatrick

Situation 37 Edited at University of Georgia
Center for Proficiency in Teaching Mathematics
01 July 2006 – Sarah Donaldson
10 July 2006 -- Sarah Donaldson and Ryan Fox

Combined and Edited at University of Georgia
Center for Proficiency in Teaching Mathematics
12 October 2006 – Sarah Donaldson and Ryan Fox

Edited at Pennsylvania State University
Mid-Atlantic Center for Mathematics Teaching and Learning
04 March 2009 – Heather Godine, Maureen Grady, and Svetlana Konnova
07 September 2009 – M. Kathleen Heid