Which Texas Instruments graphing calculator model was the first to be widely adopted in mathematics classrooms and became known as the 'pioneer' of graphing calculators in education?

Texas Instruments revolutionized mathematics education with their graphing calculators, becoming essential tools in classrooms worldwide. Beyond their educational impact, these devices represent a fascinating intersection of technology, mathematics, and product innovation. Test your knowledge about the history of these iconic mathematical tools that have helped millions of students visualize and solve complex problems.

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TI-85
TI-92
TI-83
TI-81