John Voiklis John Black Daniel Kaplan SKRAPPLE: Enabling Media-Based Study Schools, Apprentice Schools, and Samba Schools. 34-41 2004 conf/c5/2004 C5 http://csdl.computer.org/comp/proceedings/c5/2004/2166/00/21660034abs.htm db/conf/c5/c5-2004.html#VoiklisBK04