Tau Chart
A half-circle 'pi chart' next to a full-circle 'tau chart', a visual pun from the pi-vs-tau debate (τ = 2π).
Use this cartoon
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/2018-04-27-tau-chart/ (CC BY-NC 4.0)Transcript
"PI CHART" vs. "TAU CHART"