In this episode we speak with the godfather of the Thinking Classroom Peter Liljedahl. We spoke with Peter way back on episode 21 of the podcast about how he built the components of the thinking classroom and we needed to bring him back on because we only got through a fraction of what we needed to!  If you haven’t listened yet to Episode 21 we strongly encourage you to push pause on this one and head over there to give it a listen. But once you’re done listening there you’ll be itching to get back to listening to this one.  Stick around because as always Peter drops some classroom move knowledge bombs! In particular he shares why groups of 3 are better than groups of 2 in your math class; how to choose a task to fit the environment instead of modifying your environment to fit the task; 4 practices that help move group synergy work to an individual knowing; and, why “descriptions” of effective teaching strategies shouldn’t necessarily lead to “prescriptions” What you’ll learn:  Why groups of 3 are better than groups of 2 in your math class.  How to choose a task to fit the environment instead of modifying your environment to fit the task.  4 practices that help move group synergy work to an individual knowing.  Why “descriptions” of effective teaching strategies shouldn’t necessarily lead to “prescriptions” Resources:  Episode 21: The Thinking Classroom: An Interview with Peter Lijedahl.  http://www.peterliljedahl.com/  5 Practices for Orchestrating Productive Mathematical Discussions [BOOK]  Building Thinking Classrooms [BOOK]