I have to link to the site for a fantastic book that I just got: The Third Teacher.
This book is the result of a collaboration of three design firms, one in engineering (OWP/P | Cannon Design), one in educational furnishings (VS America) and one in culture (Bruce Mau Design).
The focus of the book is the role that the design of the physical environment plays in supporting or inhibiting learning. This is a question that every teacher should consider: how does your classroom help or hinder your efforts as an educator?
Class Activity: ask the students, what elements of the design of the classroom and of the school help your learning, and why; and what elements are obstacles, why? How can we address these issues?