The teacher who chastised you for “mindless doodling” was wrong on both counts. Far from shutting down the mind, the act of doodling engages the brain in the kind of visual sense-making people have practiced for over 30,000 years. Doodling sharpens concentration, increases retention, and enhances access to the problem solving unconscious. It activates the portions of the visual cortex that allow us to see mental imagery and manipulate concepts, and unifies three major learning modalities—visual, auditory, and kinesthetic. Doodle Revolution leader Sunni Brown introduces strategic doodling and presents the ABCs of our shared visual alphabet.