All five of these activities are excellent examples of activities you can use in your classes to help your students see topics from different viewpoints. Most of the activities can be easily adapted for students at different levels.
With this activity you can teach your students what "multiple perspectives" means and then practice looking at literature through different perspectives. While it is written for grades 4 and 5, you could adapt these lessons for other grade levels as well.
Teaching literacy skills through primary source activites is part of the Common Core. You can use these example activities from the Colonial Williamsburg Foundation and adapt them to any primary source documents you are using in your history or literacy lessons.
I found this article to be extremely helpful in understanding the importance of teaching multiple perspectives as well as sharing strategies for examining literature with "Think-Alouds" and role plays that we can all use in our classes. You can use these ideas with picture books, historical texts, debate topics, and so on.
You are going to want to bookmark this site if you intend to teach your students why to look at topics through multiple perspectives and want advice on how to do that. There are excellent demonstration videos as well as lessons and ideas that you can use in your classes.