Which calculator model faced a massive recall in 2010 due to a computational error that affected trigonometric calculations, causing widespread concerns among mathematics educators?

In the world of mathematics education, tools matter. Scientific calculators have become essential for students from middle school through college. But not all calculators are created equal, and some have even faced major recalls that changed how we view these essential tools. Test your knowledge about one of the most significant calculator recalls in educational product history.

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• Texas Instruments TI-83 Plus
• Casio FX-115ES Plus
• HP 35s Scientific Calculator
• Sharp EL-W535HT

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