Christopher C. D. Head, Steven A. Wolfman. Poogle and the unknown-answer assignment: open-ended, sharable cs1 assignments. In J. D. Dougherty, Susan H. Rodger, Sue Fitzgerald, Mark Guzdial, editors, Proceedings of the 39th SIGCSE Technical Symposium on Computer Science Education, SIGCSE 2008, Portland, OR, USA, March 12-15, 2008. pages 133-137, ACM, 2008. [doi]
Abstract is missing.