Which company first introduced the graphing calculator that became a classroom standard and dominated the educational mathematics tool market for decades?

Before powerful computer software and smartphone apps, graphing calculators transformed how students learned advanced mathematics. These devices represented a pivotal product innovation that changed the educational landscape forever. Test your knowledge about the revolutionary graphing calculator market that reshaped mathematics education in the 1990s and beyond.

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Hewlett-Packard with their HP-28 series
Texas Instruments with their TI-81/82/83 series
Casio with their fx-7000G model
Sharp with their EL-9600 series