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TI-83 plus. Used this exact calculator when I was in high school and now use it to teach high school! Going on 19 years of ownership! : r/BuyItForLife
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Scientific Calculator with Graphic Functions - Multiple Modes with Intuitive Interface - Perfect for Beginner and Advanced Courses,
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Helect 2-Line Engineering Scientific Calculator, Suitable for School and Business, Black - Walmart.com
Scientific Calculator With Graphic Functions - Multiple Modes With Intuitive Interface - Perfect For Beginner And Advanced Courses, High School Or | Calculators | Shopping from Microsoft Start
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Casio HS-8V Basic Calculator,Battery Backup, Easy-to-read Display, Big Display, Auto Power Off, Independent Memory, Non-stick Key - Battery/Solar Powered - 0.3" x 2.3" x 4" - Silver - kite+key, Rutgers Tech Store
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