I have this stuck on the back of my door and students use a post-it-note to both write one thing down which they have understood in the lesson as well as their name, so I can indicate where they think they have made progress.

A useful poster for learners of all ages to encourage to expand their vocabulary

A useful sheet for practitioners to monitor behaviour. Learners note their behaviour down too and sign it, so they can visually see when they are behaving well/badly