“In a nutshell, the A3 document comprises a format for structured problem-solving, created with a pencil on a piece of 11”x17” paper. Outside the United States, this paper size is called “A3,” thus the name. Although it may seem simple in design, the development of an A3 involves intense thought.”1
1. Jimmerson, C. (2007). A3 Problem Solving for Healthcare: A Practical Method for Eliminating Waste. New York, NY: CRC Press.