Group work can also increase engagement because individuals can be assigned roles that allow them to be "experts in something," so that they can be challenged at a level appropriate to their understanding, she says. To discuss and present various theories for why the Jamestown settlement failed or why the dinosaurs became extinct, for example, more advanced students may be "producers" charged with stopping their group periodically to summarize what is being said; those with attention deficits might be assigned to be "prop directors" to keep track of supplies needed to make a chart for the final presentation.
Unleashing the 'Brain Power' of groups in the Classroom: The neuroscience behind collaborative work
Harvard Education Letter
May/June 2010, p 2
Good thing we got rid of tracking.