Which calculator company's marketing campaign first successfully positioned their product as 'essential classroom technology' rather than just a computational device?

In the world of mathematics education, product marketing plays a crucial role in how tools and resources reach classrooms. Companies invest significantly in promoting calculators, software, textbooks, and learning platforms to educators and students. This poll tests your knowledge about a famous marketing campaign that revolutionized how a certain mathematical tool was perceived and adopted in educational settings.

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Texas Instruments with their 'Technology for the Classroom' campaign for the TI-83/84 series
Casio with their 'Beyond Calculation' campaign for the fx-CG50 graphing calculator
HP with their 'Think Beyond Numbers' initiative for the HP Prime
Sharp with their 'Mathematics Visualized' program for the EL-9900 series