Joe Hummel Carl Alphonce Joe Bergin Michael E. Caspersen Stuart Hansen James E. Heliotis Michael Kölling Nifty objects for CS0 and CS1. 437-438 2008 SIGCSE http://doi.acm.org/10.1145/1352135.1352283 conf/sigcse/2008 db/conf/sigcse/sigcse2008.html#HummelABCHHK08