The document discusses developing teacher leadership in mathematics and science education in Michigan. It notes that many current leaders are nearing retirement, so there is a need to identify and develop new teachers to take on leadership roles over the next few decades. It also states that teacher leadership is loosely defined and looks different in various schools and programs. The document advises that the goal is not to define teacher leadership but to help each team develop their own understanding of what it will look like in their situation. It relates that past experiences found teachers exceeded expectations for leadership roles when administrators collaborated with teachers on defining their responsibilities. The activity is intended to explore ideas around teacher leadership and construct a working definition for each team.