Common Core is all about evidence! Standard One for all grades is all about showing the evidence! This is a great Anchor Chart for Textual Evidence Sentence Starters- I would modify the language required for upper elementary and middle school students.
Pull a name from the Mystery Hero jar. Dont say their name, but let kids know you are watching your Mystery Hero. If the Mystery Hero does a good job reward them, and if they arent on give encouragement.