Review the age range of students you will be speaking with and attempting to teach perspective to. Not all children are prepared to deal with real-life issues that might be difficult or even impossible to understand at their age. It is important to understand your audience before planning your lesson on perspective and point-of-view.
Plan your lesson around a specific lesson learned or moral that will highlight the point or perspective you are attempting to get across to the students. Having students understand both sides of war might include you speaking on various war heroes, prisoners and the background of different battles and wars (including economical, social and political reasons for actions taken).
Speak on issues and situations that are relevant to your students' daily lives. Giving lessons on freedom and rights involving students and young adults will allow the students to feel comfortable and open when discussing the matters with one another and as a group.
Give examples of specific stories and issues to provoke thoughts in your students--such as wrongfully accused citizens, global disasters and the power of influence from one person and how it has affected the world today (including Dr. Martin Luther King Jr., Anne Frank, Abraham Lincoln and Gandhi are all influential people).
Talk about current local issues or matters involving other students or citizens in the area. Ask the students questions and for their own opinions when discussing the issues to help get a conversation going. The more opinions given, the more perspective the students will gain from one another.