From an August, 2017 review (http://journals.sagepub.com/doi/full/10.1177/2056997117729117):

"Gray distinguishes between knowledge and thinking, and argues persuasively that effective teachers teach a mode of thinking."
Highly Recommended.
— Dan Olinger, PhD Theologian
Clear thinking about teaching and learning.
— Brenda Schoolfield, PhD Historian
Insightful. Inspirational.
— Vincenzo Antignani, PhD Plant Biologist
A MUST read for ALL teachers.
— Ryan Martin, HS Teacher