Students can then expand and revise their essays. They should give their new positions and arguments, supporting claims which require support. Stress that the strongest arguments take the strengths of other points of view into account. Students could trade their papers with other members of their groups. Students can comment on the papers requesting clarification or evidence, pointing out where the relevance of claims is unclear, or facts or assumptions are questionable, and correcting distortions of opposing points of view.
Students can use the comments when revising their essays.
The teacher could have students write group papers, instead of individual papers giving all sides of the disagreement and clarifying points of disagreement.