Encourage positive thinking by writing a different positivity quote each week.
Print the Positive Thought for the Week Poster out on A3 or larger. Laminate it so it can be wiped cleaned and used again and again.
Write a positivity quote on the poster at the beginning of the week and discuss the way your class can show this positive thought.
You can refer to the poster if your class is not displaying the thinking or the attributes highlighted in the quote.