There are many ways of addressing diverse classrooms, team teaching, mixing student groups, mixing modalities, visual or oral communication, silent or speech filled classrooms. You could try anyone of these techniques. We must constantly vary our activities as we learn the wide range of our students learning style. The approach mentioned as most helpful is team-teaching, with colleagues who share different racial backgrounds, personalities, and learning styles, most helpful. Using effort to teach for diversity contains its own justification.