The material from Part I is subdivided to be diagrammed and given to each group. Each group is assigned to become the expert for their section. The group members are given about 10 minutes to develop one or more bubble diagrams of the material for their group by working individually. Group members are then given another 10-15 minutes to compare notes and refine their bubble diagrams. They do not have to agree on only one form of a diagram.
Groups can adopt two or more versions of bubble diagrams for the same section.
I Assemble new groups composed of one student from group A, group B, etc. so that each group covers all of the material. Each group is given 5-10 minutes per student to explain their bubble diagrams in a way that the others can make notes or copy the diagrams as they are explained. Variation II Have one student from each expert group in turn explain their section to the class by recreating their bubble diagram on a blank transparency as they talk. After all of the sections have been presented the class discusses their experience by considering each of the questions above.