In a class of 8th grade we spoke of doodles and how they can help you to relax, if they are made without having to worry about representing something. Freeing the mind and the hand, without restrictions, you can draw hundred of different patterns. This lesson is inspired by an interesting article from the art education web site Didatticarte , dedicated to Zentangles.
We have used the templates of animals that you can find here, and we have decorated them freely, listening quiet music in a relaxed (and I admit, not so usual in school!).