I like this traffic light behaviour management chart because it helps students with self-regulation. When children are misbehaving or make a bad choice, they will move their peg down a level. They will also have the chance to move up a level if their behaviour improves during the day. At the end of the day, they could colour in a face in their agenda to go home, which also communicates with parents the kind of day that their child had at school.
Twinkl Resources >> Voice Levels Wall Chart >> Thousands of printable primary teaching resources for EYFS, KS1, KS2 and beyond! voice levels, wall chart, different voice levels, when to use each voice, voice, sound levels