Search results for: Gerry Stahl
International Journal of Computer-Supported Collaborative Learning > 2009 > 4 > 2 > 115-149
Learning and Instruction > 2007 > 17 > 4 > 394-404
Knowledge-Based Systems > 1996 > 9 > 7 > 409-415
Computers & Education > 1995 > 24 > 3 > 237-246