Collaborative professional learning involves teachers working in teams over time to improve teaching and student learning. It provides activities for teachers such as observing each other's lessons, peer coaching, and reflecting on practices. The document discusses how students and technology are changing, requiring 21st century skills. Effective professional development engages teachers in self-study, sharing knowledge, and using blended learning approaches that combine in-person and online activities. It emphasizes collaborative and constructivist models where teachers solve real-world problems together.