In Science Class, I like to assign Lab Roles so that each student has something special to contribute to the team. I typically want all of the students writing in their Interactive Notebooks during labs, so my roles focus on set-up, on-task behavior, and clean-up. I also like to use acronyms in my class, so I chose L.A.B.S.S. If you only have four to a group, you would not necessarily need the Sweeper job. At some table groups, the Supplier and the Sweeper are the same person. The Leader al