Group roles for cooperative, collaborative learning. 4 copies of one role card per page so you can print each role on a different color card stock.
After assigning roles in a group, have each student silently read their card. Then, ask 1 Leader/Manager to read the card aloud. Repeat with each role.
Once students get used to working with roles, you can easily leave group activities for a substitute. Great planning-ahead strategy for sub days.
The roles cover small discussion groups and lab activities.