This video compilation shows MIT physics professor Walter Lewin (who once did star turn at the Ig Nobel Prize ceremony, on a different matter) drawing lines: BONUS: Much more, from the MIT archives
Tag: blackboard
Dirty blackboards, psychologically
Blackboard research, then and now: “The Blackboard as an Analytic Accessory,” G.V. Hamilton, Psychoanalytical Review, vol. 20, 1933, pp. 388-400. The author explains: ” My acceptance of Freud’s theory of mind came slowly. I now know that over a period of nearly two decades I was unconsciously resisting its implications and that facts which seemed […]
A Measured Look at Schoolroom Chalk Dust
At long last, after millions of students in thousands of classrooms have freely and incautiously breathed trillions of breaths, there’s a report about the question: How much chalk dust enters the air when a teacher uses a blackboard? The study, Assessment of Airborne Fine Particulate Matter and Particle Size Distribution in Settled Chalk Dust During Writing and Dusting […]