Working group report from ITiCSE 2002 on exploring the role of visualization and engagement in computer science education. This paper provides a good overview of a number of topics related to AV research, and serves as a good overview of the field up to the point when this paper was published. Note that the information contained is becoming dated, as it primarily addresses the state of the field prior to widespread use of Java. Important items addressed: (1) Various surveys of CS faculty that indicate strong support for the idea of using AVs in courses. (2) Review of key papers that survey the pedagogical effectiveness of AVs. A primary conclusion is that the difference between success and failure of AVs is the level of engagement of students. (3) Taxonomy of methods of engagement of students. (4) Discussion of Bloom's taxonomy with respect to AVs. (5) An experimental framework for future research on pedagogical effectiveness of AVs.