http://www.isaca.org/Knowledge-Center/cobit/cobit-focus/Pages/COBIT-Focus-Volume-3-July2010.aspx#2  
Two relevant points to AIS class in this ISACA newseltter.  The first is the software development life cycle 14 steps article that was quite humorous and reinforces the SDLC.  The second was the article right under that about mapping COBIT to COSO.  Nice job explaining that.