1. The document discusses several perspectives on professional development for teachers from authors like Pettis, Taylor, Brown, Hayes, and Ur.
2. Pettis argues that teachers must view themselves as lifelong learners and pursue ongoing professional development to stay knowledgeable and skillful. Professional needs and interests evolve over time.
3. Taylor provides guidance on conducting classroom-based research to improve teaching strategies and understand student interactions. Brown discusses qualities of peak performers and encourages teacher self-observation and peer coaching.
4. Hayes introduces the cascade training model for innovation and emphasizes the importance of reflection and contextualization. Ur distinguishes between professionals, amateurs, technicians and academics.