TI-89 Graphing Calculator

The TI-89 Graphing Calculator was both an educational tool and a tangible expression of Mamaw’s investment in J.D.’s schooling. Though the family went without cell phones and nice clothes, Mamaw spent $180 on the calculator for his advanced math class, insisting that he use none of his own money; the gift helped make schoolwork feel like an obligation he owed to her as well as to himself.

Acquisition and Setting

In his junior year at Middletown High School, J.D. tested into honors Advanced Math, a course combining trigonometry, advanced algebra, and precalculus. Its instructor, Ron Selby, was known for his brilliance and high demands. Selby encouraged students, though he did not require them, to obtain advanced graphing calculators. The TI-89 Graphing Calculator was the latest Texas Instruments model, and Mamaw made sure J.D. had one despite the family’s limited means.

Use and Mamaw’s Expectations

Mamaw admired Selby’s seriousness and urged J.D. to follow his example. Her purchase made that encouragement concrete: if she could spend $180 on the calculator, she expected him to apply himself. She repeatedly asked whether he had finished his work for Selby, then turned the gift into a blunt reminder of his responsibility: “I didn’t spend every penny I had on that little computer so you could fuck around all day.” The calculator’s price mattered not as a demand for repayment, but as evidence of how much Mamaw had sacrificed for his education.

Consequences and Significance

J.D. recalls that the calculator forced him to engage with school in a way he had not before. His grades began improving after he moved in with Mamaw, though at the time he did not recognize how the change in his living circumstances was affecting him. The device thus stands at the intersection of practical access and personal accountability: Mamaw supplied a tool his family could scarcely afford, and her insistence on its purpose helped make schoolwork harder for him to dismiss.