This document discusses how to provide pace and challenge in lessons. It defines pace as moving quickly between well-ordered activities with enough thinking time. Challenge involves extending students' knowledge and skills and having them think for themselves to solve problems rather than being spoon-fed. Teachers can create challenge through high-level questioning, modeling thinking, scaffolding difficult tasks, and encouraging metacognition and reflection on the learning process. A variety of thinking tools and activities are presented to help structure challenging lessons.