Issue 4 of Mathematical Thinking and Learning has been published with the following main articles:

• Orchestrating Productive Mathematical Discussions: Five Practices for Helping Teachers Move Beyond Show and Tell, by Mary Kay Stein,  Randi A. Engle,  Margaret S. Smith and Elizabeth K. Hughes
• Picture Books as an Impetus for Kindergartners’ Mathematical Thinking, Marja van den Heuvel-Panhuizen and Sylvia van den Boogaard
• Mathematics Teaching and Learning as a Mediating Process: The Case of Tape Diagrams, by Aki Murata