Jigsaw Puzzle: Edges vs. Middles
A genuine puzzle: find rectangular jigsaw puzzles with as many edge pieces as interior pieces.
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/2023-01-01-jigsaw-puzzle-edges-vs-middles/ (CC BY-NC 4.0)Transcript
"Are there any rectangular puzzles with equal numbers of middle pieces and edge pieces? (We count corners as edges.)" [A person holding a middle piece and an edge piece]