Peacemaker Ministries offers help in conflict resolution from a biblical perspective. I’ve found Ken Sande’s book, The Peacemaker, and Corlette Sande’s Young Peacemaker workbooks both very practical and thought-provoking. The first book comes in a student edition. The Young Peacemaker comes with a DVD containing a series of workbooks, suitable for about ages 9-15. Both discuss how conflicts can be resolved without fight or flight, how to work toward resolution, temptations to avoid, and more.
I’m also enjoying Ken Sande’s new work at Relational Wisdom. His emails have some good sense on improving relationships.