This week's paper is: "Even good calculus students can't solve non-routine problems" by Selden, Selden, and Mason
(http://www.academia.edu/2313681/Even_good_calculus_students_cant_solve_n...)

Some additional/related papers:

"The role of exercises in calculus textbooks" by Johan Lithner (http://snovit.math.umu.se/forskning/Didaktik/Rapportserien/Rapport%204,%...)

"Integration of Learning: A Grounded Theory Analysis of College Students' Learning" by James P. Barber (http://aer.sagepub.com/content/49/3/590.full.pdf+html)

"University Mathematics Teachers' Views on the Required Reasoning in Calculus Exams" by Ewa Bergqvist (http://search.proquest.com/docview/1448013930/fulltextPDF?accountid=10267)