Seven 3's, Three 7's
Seven 3's and three 7's are the same array, turned sideways. A stick figure tips over to see it: multiplication is commutative.
Transcript
[A 7-by-3 array of dots] "seven 3's" [the same array turned sideways] "three 7's" [the stick figure lies down sideways to look at it]
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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/2024-09-03-seven-3-s-three-7-s/ (CC BY-NC 4.0)