Which innovative marketing approach did Texas Instruments use in 2019 that revolutionized how graphing calculators were promoted to students?

Mathematics and product marketing might seem like distant cousins, but they're more closely related than you think! From statistical analysis that drives decision-making to algorithms that personalize customer experiences, math is the silent force behind successful product marketing strategies in the educational tools industry. Test your knowledge about how mathematical principles have revolutionized the marketing of educational math products and tools!

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They created an augmented reality app that showed students real-world applications of calculator functions when pointing their phone camera at textbook problems
They launched a subscription model where students could unlock advanced calculator functions through monthly payments
They partnered with Minecraft to create virtual calculators that functioned identically to physical ones in educational game servers
They introduced customizable calculator skins designed by famous mathematicians that unlocked special function tutorials