![[ACM Press the 40th ACM technical symposium - Chattanooga, TN, USA (2009.03.04-2009.03.07)] Proceedings of the 40th ACM technical symposium on Computer science education - SIGCSE '09 - Advanced placement computer science]()
[ACM Press the 40th ACM technical symposium - Chattanooga, TN, USA (2009.03.04-2009.03.07)] Proceedings of the 40th ACM technical symposium on Computer science education - SIGCSE '09 - Advanced placement computer scienceAstrachan, Owen; Walker, Henry; Stephenson, Chris; Diaz, Lien; Cuny, Jan · 2009