These are also excellent reminders to students of what they are expected to practice/learn in the school setting. I think that this would look great on my classroom board outside the class itself (reminder before they come inside!
Classroom Management: What They Didn't Cover in Teacher College - YouTube
I use these Whole Brain Teaching attention getters on a daily basis with my ELL students. These attention getters are a great way to improve your classroom management. I usually pick one or two to teach the class at the beginning of the year.