Which graphing calculator, launched in 1990, became so dominant in mathematics education that it created its own ecosystem of educational materials and significantly influenced how calculus was taught in schools?

The calculator market has dramatically evolved over the decades, transforming mathematics education and professional practice. From basic arithmetic calculators to advanced graphing models with computer algebra systems, these products have shaped how we learn and apply mathematical concepts. This poll tests your knowledge about a pivotal product launch that revolutionized how students approach higher mathematics.

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Texas Instruments TI-81
Casio fx-7000G
HP-28S
Sharp EL-5200