Describe an effective collaboration between a teacher librarian and a teacher or teachers that you have participated in or observed. In your opinion, what are some necessary factors for effective teacher / teacher librarian collaboration to occur? What are some challenges and obstacles that can hinder or prevent effective collaboration between teachers and teacher librarians?

Challenge: Using only 140 characters (length of a Tweet), what key piece of advice would you give a new teacher librarian eager to collaborate with his/her colleagues?