What do "patterns" from 2D interface design field have to do with learning in 3D virtual worlds? This presentation addresses concepts from Jenifer Tidwell's 2005 book Designing Interfaces: Patterns for Effective Interaction Design published by O'Reilly Media, Inc. and maps those onto achievements by the SLOODLE LMS system. Keynote presentation for Virtual Worlds: Libraries, Education and Museum Conference, April 24-25, 2009.