Fitbit for Proofs
A student pads their algebra work with pointless steps to boost their Fitbit 'step count.'
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Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2018-06-11-fitbit-for-proofs/ (CC BY-NC 4.0)Transcript
Teacher (holding work: x² − 19x + 84 = 0; x² − 19x + 91 = 7; x² − 19x + 84 = 0; (x − 12)(x − 7) = 0; x = 7 or 12): "Why did you add and then immediately subtract 7 from both sides of the equation?"
Student (wearing a fitness tracker): "Just got a Fitbit; trying to boost my step count."