This is about building resilience, creativity, the ability to problem solve. Building resilience in young people is such an important part of education, and a part that obsession with exam results doesn't take into account. I was talking to a japanese teacher the other day who was complaining that their students were coming out top with exam results but had no creativity or resilience because the never spent time in 'the pit'.
Self assessment/visible learning tool for students. Name on at start of a new concept, do at again at the end of the lesson to see if it has changed. Helps them to be more organised and responsible for their learning in the classroom.