These naturally flow from the introduction and signal a direction for learning. No attempt to access prior learning or build common background. Some mention of addressing a common body of knowledge. Roles are clear. They may be limited in scope.
Roles match the issues and resources.
The roles provide multiple perspectives from which to view the topic. This activity could probably be done better without the Web. Some resources reflect features of the Web that make it particularly useful. No Transformative thinking. Higher level thinking is required, but the process for students may not be clear.