Which mathematics education product line was discontinued in 2017 after its slogan 'Division Made Easy' was criticized for accidentally promoting the incorrect mathematical operation in its visual branding?

In the world of educational products, mathematics-focused retail has seen its share of successes and failures. Marketing teams often use mathematical concepts in their branding and advertising, but sometimes these efforts miss the mark. This trivia question explores a notable case where mathematical branding went wrong and became a cautionary tale in educational product marketing.

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NumWorks Calculator's 'Fraction Action' campaign
MathSplit by Educational Insights
Texas Instruments' 'Divide & Conquer' series
Pearson's 'Breaking Numbers Down' manipulatives