Skill at Teaching vs. Talking About Teaching
A scatter plot suggests skill at teaching and skill at talking about teaching are only loosely correlated.
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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2014-01-01-skill-at-teaching-vs-talking-about-teaching/ (CC BY-NC 4.0)Transcript
[Scatter plot: Skill at Talking About Teaching (y) vs. Skill at Teaching (x), a large, weakly correlated cloud of dots]