J. Sajaniemi,
“Visualizing Roles of Variables to Novice Programmers”, presented at the 06/2002, PPIG 2002 - 14th Annual Workshop, 2002.
J. Sajaniemi and Hu, C.,
“Teaching Programming: Going beyond "Objects First"”, presented at the 09/2006, PPIG 2006 - 18th Annual Workshop, 2006.