Which calculating tool, first mass-produced in 1967, revolutionized mathematics education by making complex calculations accessible to students and became the first electronic product to sell over a million units?

Throughout history, the tools mathematicians use have evolved dramatically, from ancient counting boards to modern calculators. These product innovations have transformed how we teach, learn, and apply mathematics in everyday life. This poll tests your knowledge about a revolutionary mathematical product that changed classrooms worldwide and became a cornerstone of mathematical education for generations.

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• The Curta mechanical calculator
• The Texas Instruments TI-30 scientific calculator
• The Hewlett-Packard HP-35 pocket calculator
• The Sharp QT-8D electronic calculator

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